1 Esdras 8:7

7 Ezra had a thorough knowledge of the Law of the Lord and neglected none of its details. As a result he could teach all its laws and regulations to all the people of Israel.

1 Esdras 8:7 In-Context

5 for Jerusalem with a group of Israelites which included priests, Levites, Temple musicians, Temple guards, and workmen.
6 They left Babylonia on the first day of the first month in the seventh year of the reign of Artaxerxes. God gave them a safe journey, and they arrived in Jerusalem on the first day of the fifth month.
7 Ezra had a thorough knowledge of the Law of the Lord and neglected none of its details. As a result he could teach all its laws and regulations to all the people of Israel.
8 The following is a copy of the decree that Emperor Artaxerxes gave to Ezra, the priest and scholar of the Law of the Lord:
9 "From Emperor Artaxerxes to the priest Ezra, scholar of the Law of the Lord, greetings.
Scripture taken from the Good News Translation - Second Edition, Copyright 1992 by American Bible Society. Used by Permission.