NET
10 Now Ezra had dedicated himself to the study of the law of the Lord, to its observance, and to teaching its statutes and judgments in Israel.
Darby
10 For Ezra had directed his heart to seek the law of Jehovah and to do it, and to teach in Israel the statutes and the ordinances.
KJV
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.