No uncleanness.... This caution against suffering any filth in the camp, was to teach them to fly the filth of sin, which driveth God away from the soul.
23:15. Thou shalt not deliver to his master the servant that is fled to thee.
23:16. He shall dwell with thee in the place that shall please him, and shall rest in one of thy cities: give him no trouble.
23:17. There shall be no whore among the daughters of Israel, nor whoremonger among the sons of Israel.
23:18. Thou shalt not offer the hire of a strumpet, nor the price of a dog, in the house of the Lord thy God, whatsoever it be that thou hast vowed: because both these are an abomination to the Lord thy God.
23:19. Thou shalt not lend to thy brother money to usury, nor corn, nor any other thing:
23:20. But to the stranger. To thy brother thou shalt lend that which he wanteth, without usury: that the Lord thy God may bless thee in all thy works in the land, which thou shalt go in to possess.
To the stranger.... This was a dispensation granted by God to his people, who being the Lord of all things, can give a right and title to one upon the goods of another. Otherwise the scripture everywhere condemns usury, as contrary to the law of God, and a crying sin. See Ex. 22.25; Lev. 25.36, 37; 2 Esd. 5.7; Ps. 14.5; Ezech. 18.8, 13, etc.
23:21. When thou hast made a vow to the Lord thy God, thou shalt not delay to pay it: because the Lord thy God will require it. And if thou delay, it shall be imputed to thee for a sin.
23:22. If thou wilt not promise, thou shalt be without sin.