Deuteronomy Chapter 30, Verse 20

20: That thou mayest love the LORD thy God, and that thou mayest obey his voice, and that thou mayest cleave unto him: for he is thy life, and the length of thy days: that thou mayest dwell in the land which the LORD sware unto thy fathers, to Abraham, to Isaac, and to Jacob, to give them.— edit KJV text
20: And that thou mayst love the Lord thy God, and obey his voice, and adhere to him (for he is thy life, and the length of thy days,) that thou mayst dwell in the land, for which the Lord swore to thy fathers Abraham, Isaac, and Jacob that he would give it them.— edit Douay text
20: to love the Lord thy God, to hearken to his voice, and cleave to him; for this [is] thy life, and the length of thy days, that thou shouldest dwell upon the land, which the Lord sware to thy fathers, Abraam, and Isaac, and Jacob, to give to them.— edit LXX text