“No man can seriously read and consider this precept [the Fourth Commandment] without seeing that it is of vast importance. It is a law claiming to regulate a seventh portion of human life. If a man lives twenty-one years, this law claims the entire control of three of them; if he lives fifty years, it disposes of more than seven of them. It is therefore important.

But it also devotes this portion of time to religious purposes; and these are the highest ends of life. All other time is secular. This is holy. That may be occupied with things which perish in the using. This must be given to things which take hold on eternity.” — William S. Plumer, The Law of God, as Contained in the Ten Commandments, Explained and Enforced (1864), pp. 289-290