Cross reference
Deuteronomy 15:16
16 It shall be, if he tell you, I will not go out from you; because he loves you and your house, because he is well with you;
Exodus 21:5-6
5 But if the servant shall plainly say, 'I love my master, my wife, and my children. I will not go out free;'
6 then his master shall bring him to God, and shall bring him to the door or to the door-post, and his master shall bore his ear through with an awl, and he shall serve him for ever.
Psalms 40:6
6 Sacrifice and offering you didn't desire. You have opened my ears: Burnt offering and sin offering you have not required.
Psalms 40:8
8 I delight to do your will, my God. Yes, your law is within my heart."