Deuteronomy Chapter 6, Verse 13

13: Thou shalt fear the LORD thy God, and serve him, and shalt swear by his name.- edit KJV text
13: Take heed deligently lest thou forget the Lord, who brought thee out of the land of Egypt, out of the house of bondage. Thou shalt fear the Lord thy God, and shalt serve him only, and thou shalt swear by his name.— edit Douay text
13: Thou shalt fear the Lord thy God, and him only shalt thou serve; and thou shalt cleave to him, and by his name thou shalt swear.— edit LXX text