Romans 14:6

He that regardeth the day, regardeth it unto the Lord: and he that eateth, eateth unto the Lord, for he giveth God thanks; and he that eateth not, unto the Lord he eateth not, and giveth God thanks. [The conduct of each was equally commendable, as the object of each was the same; that is, to serve God. The one who rested and the one who labored each sought to please God in his act. One gave thanks for meat and all, and the other gave thanks for all, less meat. "This so remarkable saying of the apostle furnishes us," says Godet, "with the true means of deciding all those questions of casuistry which so often arise in Christian life, and cause the believer so much embarrassment. May I allow myself this or that pleasure? Yes, if I can enjoy it to the Lord, and while giving him thanks for it; no, if I can not receive it as a gift from his hand, and bless him for it. This mode of solution respects at once the rights of the Lord and those of individual liberty." The passage indicates that grace before meals was the universal practice of Christians in Paul's day. It probably rested on the habit of Jesus-- Luke 9:16; Luke 22:17-19; Luke 24:30-35]