"Ezra had his heart to study the law of the Lord, and to do it, and to teach the statutes and ordinances in Israel." (Ezra 7:10; NRSV). This threefold characteristic is very significant. Firstly, he was a diligent student of God's law. Not content with superficial acquaintance, he sought out its meaning and its application. Secondly, he was resolved to be not a forgetful hearer but an obedient doer of God's Word. Thirdly, he went beyond personal study and observance to a ministry of teaching others. Moreover, on all three (to study, to do, to teach) he had set his heart.
Sounds like discipleship to me!! (Mt. 28:19f).