1 Samuel 7:3
And Samuel spoke to all the house of Israel, saying, If you do return to the LORD with all your hearts, then put away the strange gods and Ashtaroth from among you, and prepare your hearts to the LORD, and serve him only: and he will deliver you out of the hand of the Philistines.
Torrey's Topical Textbook—AKJV

Ezra 7:10
For Ezra had prepared his heart to seek the law of the LORD, and to do it, and to teach in Israel statutes and judgments.
Torrey's Topical Textbook—AKJV