Deuteronomy 10:12
And now, Israel, what doth the LORD thy God require of thee, but to fear the LORD thy God, to walk in all his ways, and to love him, and to serve the LORD thy God with all thy heart and with all thy soul,
Deuteronomy 18:19
And it shall come to pass, that whosoever will not hearken unto my words which he shall speak in my name, I will require it of him.