I Esdras 8:21

21 Let all things be performed after the law of God diligently unto the most high God, that wrath come not upon the kingdom of the king and his sons.

I Esdras 8:21 In-Context

19 And I king Artaxerxes have also commanded the keepers of the treasures in Syria and Phenice, that whatsoever Esdras the priest and the reader of the law of the most high God shall send for, they should give it him with speed,
20 To the sum of an hundred talents of silver, likewise also of wheat even to an hundred cors, and an hundred pieces of wine, and other things in abundance.
21 Let all things be performed after the law of God diligently unto the most high God, that wrath come not upon the kingdom of the king and his sons.
22 I command you also, that ye require no tax, nor any other imposition, of any of the priests, or Levites, or holy singers, or porters, or ministers of the temple, or of any that have doings in this temple, and that no man have authority to impose any thing upon them.
23 And thou, Esdras, according to the wisdom of God ordain judges and justices, that they may judge in all Syria and Phenice all those that know the law of thy God; and those that know it not thou shalt teach.

The Brenton translation of the Septuagint is in the public domain.