That thou mayest love the Lord thy God,.... And show it by keeping his commands: and that thou mayest obey his voice; in his word, and by his prophets: and that thou mayest cleave unto him; and to his worship, and not follow after and serve other gods: for he is thy life, and the length of thy days; the God of their lives, and the Father of their mercies; the giver of long life, and all the blessings of it; and which he had promised to those that were obedient, to him, and which they might expect: that thou mayest dwell in the land which the Lord sware unto thy fathers, to Abraham, to Isaac, and to Jacob, to give them; the land of Canaan, often thus described; this was the grand promise made to obedience to the law, and was typical of eternal life and happiness; which is had, not through man's obedience to the law, but through the obedience and righteousness of Christ. Next: Deuteronomy Chapter 31