Deuteronomy 10:12-16

“And now, Israel, what does the LORD your God require of you, but to fear the LORD your God, to walk in all His ways and to love Him, to serve the LORD your God with all your heart and with all your soul, and to keep the commandments of the LORD and His statutes which I command you today for your good? Indeed heaven and the highest heavens belong to the LORD your God, also the earth with all that is in it. The LORD delighted only in your fathers, to love them; and He chose their descendants after them, you above all peoples, as it is this day. Therefore circumcise the foreskin of your heart, and be stiff-necked no longer.