Ezra
Ezra 7:10ESV·traditional attribution

For Ezra had set his heart to study the Law of the LORD, and to do it and to teach his statutes and rules in Israel.

Matthew Henry Presbyterian @wholebiblehenry

Here is, I. Ezra's pedigree. He was one of the sons of Aaron, a priest. Him God chose to be an instrument of good to Israel, that he might put honour upon the priesthood, the glory of which had been much eclipsed by the captivity.

Commenting on Ezra 7:1-10

John Gill Reformed Baptist @doctorgill

Now this is the copy of the letter that the King Artaxerxes gave unto Ezra the priest,.... This title relating to his office is justly given him, since he was the son of an high priest, and lineally descended from Aaron, as the above account of his pedigree shows: the scribe, even a scribe of the words of the commandments of the Lord, and of...

Jamieson-Fausset-Brown Reformed @jfbcommentary

Ezra had prepared his heart to seek the law of the Lord, &c.--His reigning desire had been to study the divine law--its principles, institutions, privileges, and requirements; and now from love and zeal, he devoted himself, as the business of his life, to the work of instructing, reforming, and edifying others.