A Puritan Catechism on the Fourth Commandment

A. The fourth commandment is, “Remember the Sabbath day, to keep it holy. Six days shalt thou labour, and do all thy work: but the seventh day is the Sabbath of the Lord thy God: in it thou shalt not do any work, thou, nor thy son, nor thy daughter, thy manservant, nor thy maidservant, nor they cattle, nor thy stranger that is within thy gates. For in six days the Lord made heaven and earth, the sea, and all that in them is, and rested the seventh day: wherefore the Lord blessed the Sabbath day and hallowed it.”

49 Q. What is required in the fourth commandment?

A. The fourth commandment requires the keeping holy to God such set times as he has appointed in his Word, expressly one whole day in seven, to be a holy Sabbath to himself (Lev. 19:30; Deut. 5:12).

50 Q. How is the Sabbath to be sanctified?

A. The Sabbath is to be sanctified by a holy resting all that day, even from such worldly employments and recreations as are lawful on other days (Lev. 23:3), and spending the whole time in the public and private exercises of God’s worship (Ps. 92:1-2; Isa. 58:13-14), except so much as is taken up in the works of necessity and mercy (Matt. 12:11-12).

Source: http://www.reformedreader.org/ccc/puritan_catechism.htm#Q49