The puritan Thomas Boston wrote some thoughts on the sabbath. I've reposted one of his sections below for your reflection.
VI. Some Improvement of this Command.
USE. Let me exhort you then to beware of profaning the Sabbath. Learn to keep it holy. And therefore I would call you here to several duties.
1. Remember the Sabbath-day, before it come, to prepare for it, and let your eye be on it before the week be done. Timeously lay by your worldly employment, and go not near the borders of the Lord's day, and strive to get your hearts in a frame suitable to the exercises of this holy day.
2. Make conscience of attending the public ordinances, and waiting on God in his own house on his own day. Loiter not away the Lord's day at home unnecessarily, seeing the Lord trusts to meet his people there. This will bring leanness to your own souls, and grief of heart to him that bears the Lord's message to you.
3. Before you come to the public, spend the morning in secret and private exercises, particularly in prayer, reading, and meditation; remembering how much your success depends upon suitable preparation. Put off your shoes before ye tread the holy ground.
4. Make not your attendance on the public ordinances a by-hand work, and a mean for carrying on your worldly affairs. If ye come to the church to meet with some body, and to discourse or make appointments about your worldly business, it will be a wonder if ye meet with the Lord. If ye travel on the Lord's day, and take a preaching by the way, it may well cheat your blinded consciences; it will not be pleasing to God, for it makes his service to stand but in the second room, while your main end is what concerns your temporal affairs. Among the Jews no man might make the mountain of the house, or a synagogue, a thoroughfare. And beware of common discourse between sermons, which is too much practised among professors.
5. When ye come home from the public ordinances, let it be your care, both by the way and at home, to meditate or converse about spiritual things, and what ye have heard. Retire and examine yourselves as to what ye have gained, and be not as the unclean beasts, who chew not the cud. Let masters of families take account of their children and servants how they have profited, catechise and instruct them in the principles of religion, and exhort them to piety.
6. When ye are necessarily detained from the public ordinances, let your hearts be there, Psalm 63.1,2; and do not turn that to sin which in itself is not your sin. And strive to spend the Lord's day in private and secret worship, looking to the Lord for the up-making of your wants. As for those that tie themselves to men's service, without a due regard to their having opportunities to hear the Lord's word, their wages are dear bought, and they have little respect to God or their own souls; and I think tender Christians will be loath to engage so. But, alas! few masters or servants look further than the work or wages in their engaging together!. A sad argument that religion is at a low ebb.
7. Do not cut the Sabbath short. The church of Rome has half holidays; God never appointed any such; it is one whole day. Alas! it is a sad thing to see how the Lord's day is so consumed, as if people would make up the loss of a day out of Saturday's night and Monday's morning, which they do by cutting short the Lord's day.
8. Lastly, Labour to be in a Sabbath-day's frame. Let the thoughts of worldly business, far more worldly words and works be far from you. To press this, consider,
(1.) It is God's command, whereby he tries your love to him. This day is as the forbidden fruit. Who does not condemn Adam and Eve for eating it? O do not profane it any manner of way!
(2.) Heaven will be an everlasting Sabbath, and our conversation should be heaven-like. If we grudge the Lord one day in seven, how will we relish eternity? We are ready to complain that we are toiled with the world: why then do we not enter into his rest?
(3.) The great advantage of sanctifying the Lord's day. He has made it a day of blessing. It is God's deal-day; and keeps up the heart of many through the week while they think of its approach.
(4.) Lastly, Ye will bring wrath on you if ye do not sanctify the Sabbath. God may plague you with temporal, spiritual, and eternal plagues. Many begin with this sin of profaning the Lord's day, and it brings upon them the wrath of God, both in this world and that which is to come.