Psalm 101:2

I have sworn, and I will perform it, that I will keep thy righteous judgments.

And if thou wilt walk before me, as David thy father walked, in integrity of heart, and in uprightness, to do according to all that I have commanded thee, and wilt keep my statutes and my judgments:

Depart from me, ye evildoers: for I will keep the commandments of my God.

But I am poor and needy; yet the Lord thinketh upon me: thou art my help and my deliverer; make no tarrying, O my God.

Mine eyes shall be upon the faithful of the land, that they may dwell with me: he that walketh in a perfect way, he shall serve me.

For it came to pass, when Solomon was old, that his wives turned away his heart after other gods: and his heart was not perfect with the LORD his God, as was the heart of David his father.

And thou shalt teach them diligently unto thy children, and shalt talk of them when thou sittest in thine house, and when thou walkest by the way, and when thou liest down, and when thou risest up.

And if it seem evil unto you to serve the LORD, choose you this day whom ye will serve; whether the gods which your fathers served that were on the other side of the flood, or the gods of the Amorites...

But the high places were not taken away out of Israel: nevertheless the heart of Asa was perfect all his days.

For I know him, that he will command his children and his household after him, and they shall keep the way of the LORD, to do justice and judgment; that the LORD may bring upon Abraham that which he h...

Then Ahimelech answered the king, and said, And who is so faithful among all thy servants as David, which is the king’s son in law, and goeth at thy bidding, and is honourable in thine house?

Also in Judah the hand of God was to give them one heart to do the commandment of the king and of the princes, by the word of the LORD.

And said, Remember now, O LORD, I beseech thee, how I have walked before thee in truth and with a perfect heart, and have done that which is good in thy sight. And Hezekiah wept sore.