The Westminster Assembly's Directory for Public Worship provides directions for the proper, Biblical sanctification of the Lord's Day as follows:
Of the Sanctification of the Lord's Day
THE Lord's day ought to be so remembered before-hand, as that all worldly business of our ordinary callings may be so ordered, and so timely and seasonably laid aside, as they may not be impediments to the due sanctifying of the day when it comes.
The whole day is to be celebrated as holy to the Lord, both in publick and private, as being the Christian sabbath. To which end, it is requisite, that there be a holy cessation or resting all that day from all unnecessary labours; and an abstaining, not only from all sports and pastimes, but also from all worldly words and thoughts.
That the diet on that day be so ordered, as that neither servants be unnecessarily detained from the publick worship of God, nor any other person hindered from the sanctifying that day. That there be private preparations of every person and family, by prayer for themselves, and for God's assistance of the minister, and for a blessing upon his ministry; and by such other holy exercises, as may further dispose them to a more comfortable communion with God in his public ordinances.
That all the people meet so timely for publick worship, that the whole congregation may be present at the beginning, and with one heart solemnly join together in all parts of the publick worship, and not depart till after the blessing.
That what time is vacant, between or after the solemn meetings of the congregation in publick, be spent in reading, meditation, repetition of sermons; especially by calling their families to an account of what they have heard, and catechising of them, holy conferences, prayer for a blessing upon the publick ordinances, singing of psalms, visiting the sick, relieving the poor, and such like duties of piety, charity, and mercy, accounting the sabbath a delight.