Psalm 37:31
"The law of his God is in his heart; none of his steps shall slide."
Cross References (ranked by relevance)
I delight to do thy will, O my God: yea, thy law is within my heart.
And these words, which I command thee this day, shall be in thine heart:
Hearken unto me, ye that know righteousness, the people in whose heart is my law; fear ye not the reproach of men, neither be ye afraid of their revilings.
Thy word have I hid in mine heart, that I might not sin against thee.
But this shall be the covenant that I will make with the house of Israel; After those days, saith the LORD, I will put my law in their inward parts, and write it in their hearts; and will be their God, and they shall be my people.
The steps of a good man are ordered by the LORD: and he delighteth in his way.
He will not suffer thy foot to be moved: he that keepeth thee will not slumber.
Our heart is not turned back, neither have our steps declined from thy way;
Thou through thy commandments hast made me wiser than mine enemies: for they are ever with me.
But his delight is in the law of the LORD; and in his law doth he meditate day and night.
He taught me also, and said unto me, Let thine heart retain my words: keep my commandments, and live.
My foot hath held his steps, his way have I kept, and not declined.
For this is the covenant that I will make with the house of Israel after those days, saith the Lord; I will put my laws into their mind, and write them in their hearts: and I will be to them a God, and they shall be to me a people:
The simple believeth every word: but the prudent man looketh well to his going.
Hold up my goings in thy paths, that my footsteps slip not.
But as for me, my feet were almost gone; my steps had well nigh slipped.
Of the oaks of Bashan have they made thine oars; the company of the Ashurites have made thy benches of ivory, brought out of the isles of Chittim.