John 4:34

Jesus says to them, My food is that I may do the will of Him that sent me, and finish His work.

2 Corinthians 3:3

being manifest that you are the letter of Christ, having been ministered by us, having been written not with ink, but with the Spirit of the living God: not in tables of stone, but in tables that are hearts of flesh.

Romans 7:22

for I delight in the law of God according to the inward man;

Romans 8:29

Because whom he did foreknow, he did also predestinate to be conformed to the image of his Son, in order that he might be the firstborn among many brethren:

Treasury of Scripture Knowledge

Summary

I delight to do thy will, O my God: yea, thy law is within my heart.

Bible References

I delight

John 4:34
Jesus says to them, My food is that I may do the will of Him that sent me, and finish His work.
Romans 7:22
for I delight in the law of God according to the inward man;
Romans 8:29
Because whom he did foreknow, he did also predestinate to be conformed to the image of his Son, in order that he might be the firstborn among many brethren: