Deuteronomy 31:25 KJV
That Moses commanded the Levites, which bare the ark of the covenant of the Lord, saying,
Deuteronomy 31:25, King James Version
In context
24 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,
25 That Moses commanded the Levites, which bare the ark of the covenant of the Lord, saying,
26 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.