I believe Scripture defines two kingdoms on earth: the kingdom of God and the kingdom of the world, influenced by Satan:
Mark 1:14-15 – “Now after that John was put in prison, Jesus came into Galilee, preaching the gospel of the kingdom of God, And saying, The time is fulfilled, and the kingdom of God is at hand: repent ye, and believe the gospel.”
Eph 2:2 – “Wherein in time past ye walked according to the course of this world, according to the prince of the power of the air, the spirit that now worketh in the children of disobedience“
I also believe the following implies that time is a factor of servitude. For example, when one spends time pursuing either mammon or God, they are serving one or the other:
Matt 6:24 – “No man can serve two masters: for either he will hate the one, and love the other; or else he will hold to the one, and despise the other. Ye cannot serve God and mammon.“
Besides mammon, I believe generally the activities of our lives that we can engage in fall into being a part of the kingdom of God or the kingdom of the world; and, like mammon, if it is part of one, it cannot be part of the other. If we were to list all the activities in our lives throughout the week and categorize them honestly as being part of the kingdom of God or the kingdom of the world, in what kingdom would they end up?
How much of our lives is spent participating in, and thus serving, the kingdom of the world; and therefore, how much of our lives is spent not in the service of Christ and following Him? And then are we actually servants of Christ?
To use the political vernacular of the day, are we just CHRINOs — Christians in name only?
It is possible to say we are Christians and not be:
Matt 7:21-23 – “Not every one that saith unto me, Lord, Lord, shall enter into the kingdom of heaven; but he that doeth the will of my Father which is in heaven. Many will say to me in that day, Lord, Lord, have we not prophesied in thy name? and in thy name have cast out devils? and in thy name done many wonderful works? And then will I profess unto them, I never knew you: depart from me, ye that work iniquity.”
James 2:19-20 – “Thou believest that there is one God; thou doest well: the devils also believe, and tremble. But wilt thou know, O vain man, that faith without works is dead?”
1 John 4:20 – “If a man say, I love God, and hateth his brother, he is a liar: for he that loveth not his brother whom he hath seen, how can he love God whom he hath not seen?”
Judas was a Christ-follower, but externally only and not in his heart truly. (You can listen to an excellent sermon on Judas being a Christian in name only here.)
Christianity isn’t something we do — it’s who we are. We shouldn’t fit Christianity into the rest of the things in our lives — the rest of the things in our lives should fit into our Christianity, directed by the Word of God, the Bible.
How is our Lord’s Day keeping? Is the day — the whole day — kept holy, set apart for the worship of Christ and religious exercises? Here is what Puritan Thomas Watson said in part regarding the 4th Commandment, which you can listen to here, Part 1, Part 2, Part 3, or all the commandments in their entirety:
Use one. See here the Christian’s duty, “to keep the Sabbath-day holy.”
(1) The whole Sabbath is to be dedicated to God. It is not said, Keep a part of the Sabbath holy but the whole day must be piously observed. If God has given us six days, and taken but one to himself, shall we grudge him any part of that day? This would be sacrilege. … Let those who say, that to keep a whole Sabbath is too Judaical, show where God has made any abatement of the time of worship; where he has said, you shall keep but a part of the Sabbath; and if they cannot show that, it robs God of his due. That a whole day be designed and set apart for his special worship, is a perpetual statute, while the church remains upon the earth, …
(2) As the whole Sabbath is to be dedicated to God, so it must be kept holy. …
“If you turn away your foot from the Sabbath, from doing your pleasure on my holy day; and call the Sabbath a delight, the holy of the Lord, honorable: and shall honor him, not doing your own ways, nor finding your own pleasure, nor speaking your own words.” Isaiah 58:13. Here is a description of rightly sanctifying a Sabbath.
“If you turn away your foot from the Sabbath.” This may be understood either literally or spiritually. Literally, that is, if you withdraw your foot from taking long walks or journeys on the Sabbath-day. So the Jewish doctors expound it. Or, spiritually, if you turn away your affections (the feet of your soul) from inclining to any worldly business.
“From doing your pleasure on my holy day.” That is, you must not do that which may please the carnal part, as in sports and recreations. This is to do the devil’s work on God’s day.
“And call the Sabbath a delight.” Call it a delight, that is, esteem it so. Though the Sabbath is not a day for carnal pleasure, yet holy pleasure is not forbidden. The soul must take pleasure in the duties of a Sabbath…
“Not doing your own ways.” That is, you shall not defile the day by doing any servile work.
“Nor finding your own pleasure.” That is, not gratifying the fleshly part by walks, visits, or recreations.
“Nor speaking your own words.” That is, words unsuitable for a Sabbath; vain, impertinent words; discourses of worldly affairs.
Now, how about the rest of our lives? How do our lives compare to the following?
From AW Pink’s “A Fourfold Salvation”, part 3 on “Salvation from the Power of Sin“:
But not only must the new nature be fed, it is equally necessary for our spiritual well-being that the old nature should be starved. This is what the apostle had in mind when he said, “Make not provision for the flesh, unto the lusts thereof” (Rom. 13:14). To starve the old nature, to make not provision for the flesh, means that we abstain from everything that would stimulate our carnality; that we avoid, as we would a plague, all that is calculated to prove injurious to our spiritual welfare.
Not only must we deny ourselves the pleasures of sin, shun such things as the saloon, theatre, dance, card-table, etc., but we must separate ourselves from the worldly companions, cease to read worldly literature, abstain from everything upon which we cannot ask God’s blessing.
Our affections are to be set upon things above, and not upon things upon the earth (Col. 3:2).
Does this seem a high standard, and sound impracticable? Holiness in all things is that at which we are to aim, and failure to do so explains the leanness of so many Christians. Let the young believer realize that whatever does not help his spiritual life hinders it.
Or this, from J.C. Ryle’s Holiness book (Chapter 19, which you can listen to here, Part 1, Part 2, or in its entirety):
I must honestly declare my conviction that, since the days of the Reformation, there never has been so much profession of religion without practice, so much talking about God without walking with Him, so much hearing God’s words without doing them, as there is in England at this present date. Never were there so many empty tubs and tinkling cymbals! Never was there so much formality and so little reality. The whole tone of men’s minds on what constitutes practical Christianity seems lowered. The old golden standard of the behaviour which becomes a Christian man or woman appears debased and degenerated.
You may see scores of religious people (so-called) continually doing things which in days gone by would have been thought utterly inconsistent with vital religion. They see no harm in such things as card-playing, theatre-going, dancing, incessant novel-reading, and Sunday-travelling, and they cannot in the least understand what you mean by objecting to them! The ancient tenderness of conscience about such things seems dying away and becoming extinct, like the dodo. When you venture to remonstrate with young communicants who indulge in them, they only stare at you as an old-fashioned, narrow-minded, fossilized person and say, “Where is the harm?” In short, laxity of ideas among young men, and “fastness” and levity among young women, are only too common characteristics of the rising generation of Christian professors.
Now in saying all this I would not be mistaken. I disclaim the slightest wish to recommend an ascetic religion. Monasteries, nunneries, complete retirement from the world, and refusal to do our duty in it, all these I hold to be unscriptural and mischievous nostrums. Nor can I ever see my way clear to urging on men an ideal standard of perfection for which I find no warrant in God’s Word, a standard which is unattainable in this life, and hands over the management of the affairs of society to the devil and the wicked. No; I always wish to promote a genial, cheerful, manly religion, such as men may carry everywhere and yet glorify Christ.
Or this, from Puritan Thomas Manton:
John 17:16 – “They are not of the world, even as I am not of the world.”
2. Observe again, an excellent means to digest the world’s neglect is to consider the example of Christ. It is our duty, it will be for our comfort, and it turneth to our profit.
1. It is our duty. In his example we have a taste of his Spirit: ‘I am not of the world,’ said Christ; and we should ‘ imitate Christ as dear children,’ Eph. v. 1. They that love to live in delight and pleasures are but christians in name. If we had no other reason to contemn the vanity of the world than the life of Christ, this were enough. Who was wisest, Christ or you ? Who can make the better choice, Christ or you? Who is in error, Christ or you? Christ chose a poor life, and you affect [work to acquire] greatness.
Claiming to be a Christian and not living as one can also be taking the Lord’s name in vain. If we say we are Christians, we take the name of Christ as ours (like when a new wife takes her husband’s surname).
For example, besides potentially swearing falsely, Puritan commentator Matthew Henry suggests the following is one of the ways of taking God’s name in vain:
Prov 30:7-9 – “7 Two things have I required of thee; deny me them not before I die: 8 Remove far from me vanity and lies: give me neither poverty nor riches; feed me with food convenient for me: 9 Lest I be full, and deny thee, and say, Who is the Lord? or lest I be poor, and steal, and take the name of my God in vain.”
Lest I should steal, and take the name of my God in vain, that is, discredit my profession of religion by practices disagreeable to it.
And here is Thomas Watson on the 3rd Commandment (which you can listen to in its entirety here) giving his explanations of some of the ways we can take the Lord’s name in vain:
Exo 20:7 – “Thou shalt not take the name of the Lord thy God in vain; for the Lord will not hold him guiltless that taketh his name in vain.”
 We take God’s name in vain, when we profess God’s name but do not live answerably to it, we take it in vain. They profess that they know God, but in works they deny him, Titus 1:16. When men’s tongues and lives are contrary to one another, when, under a mask of profession, they lie and deceive, and are unclean, they make use of God’s name to abuse him, and take it in vain. “Pretended holiness is merely double wickedness.” “The name of God is blasphemed among the Gentiles because of you.”, Rom 2:24. When the heathen saw the Jews, who professed to be God’s people, to be scandalous, it made them speak evil of God, and hate the true religion for their sakes.
 We take God’s name in vain, when we worship him with our lips but not with our hearts. God calls for the heart, “My son, give me your heart.”, Prov 23:26. The heart is the chief thing in religion; it draws the will and affections after it, as the Primum Mobile [the outermost moving sphere that carried the others with it in the geocentric view of the universe] draw the other orbs along with it. The heart is the incense which perfumes our holy things. The heart is the altar which sanctifies the offering. When we seem to worship God but withdraw our heart from him, we take his name in vain. “These people honor me with their lips, but their hearts are far from me. They worship me in vain.”, Matthew 15:8-9
Hypocrites take God’s name in vain: their religion is a lie; they seem to honor God but they do not love him; their hearts go after their lusts [generally, any corrupt desires of the heart]. “They set their heart on their iniquity.”, Hos 4:8. Their eyes are lifted up to heaven but their hearts are rooted in the earth, Ezek 33:31. These are devils in Samuel’s mantle.
Superstitious people take God’s name in vain. They bring him a few ceremonies which he never appointed, bow at Christ’s name and cringe to the altar but hate and persecute God’s image.
Further, do we have oil in our lamps, or are we just holding empty ones?
Is our true purpose in life God and His glory alone?
Is our eye single toward Christ? Are our treasures, and thus our hearts, on things of this world, or Christ Himself and heavenly things?
And finally, are we ravished with the beauty of Christ? Do we wish to be in His presence more each day, in prayer now and in person in heaven one day? Is he our all?
The Song of Solomon is an allegory of the relationship between Christ and His bride, the Church. If you’ve never read through it with that in mind, I would encourage you to do so. And here are other excellent sermons, focusing on some of this relationship, and the Church’s desire, and those individuals that make up the bride of Christ, for Christ, the excellency it (the Church) and they (the individuals) see in Him, and its and their desire for communion with Him:
I believe the kingdom of Christ is real, here, and now, and is not yoked with the kingdom of the world; and those that take the name of Christ I believe should strive to live life in and focused on Christ and His kingdom, participating much in heavenly things, purposing all things for God’s glory, separated as much as possible from the world’s kingdom and its accoutrements.
May God grant us a desire for the things of the world to die to us, and may He grant that they indeed do!
Your main and principal motive as a Christian should always be to live for Christ. To live for glory? Yes, but for his glory. To live for comfort? Yes, but be all your consolation in him. To live for pleasure? Yes, but when you are merry, sing psalms, and make melody in your hearts to the Lord. To live for wealth? Yes, but to be rich in faith. You may lay up treasure, but lay it up in heaven.
– Charles Spurgeon
1 John 2:15 – “Love not the world, neither the things that are in the world. If any man love the world, the love of the Father is not in him.”
Rom 12:2 – “And be not conformed to this world: but be ye transformed by the renewing of your mind, that ye may prove what is that good, and acceptable, and perfect, will of God.”
Psa 73:25-26 – “Whom have I in heaven but thee? and there is none upon earth that I desire beside thee. My flesh and my heart faileth: but God is the strength of my heart, and my portion for ever.”
Phil 4:8 – “Finally, brethren, whatsoever things are true, whatsoever things are honest, whatsoever things are just, whatsoever things are pure, whatsoever things are lovely, whatsoever things are of good report; if there be any virtue, and if there be any praise, think on these things.“