Yes - but if the Septuagint was pre-Christian, then those translators went against God's Word and principles in it in allowing other tribes to take over this job.

Deuteronomy 31:9 And Moses wrote this law, and delivered it unto the priests the sons of Levi, which bare the ark of the covenant of the LORD, and unto all the elders of Israel.

Deuteronomy 31:24-26 And it came to pass, when Moses had made an end of writing the words of this law in a book, until they were finished, That Moses commanded the Levites, which bare the ark of the covenant of the LORD, saying, Take this book of the law, and put it in the side of the ark of the covenant of the LORD your God, that it may be there for a witness against thee.