Verse from Deuteronomy

我吩咐你们的话，你们不可增加，也不可减少，好使你们遵守我吩咐你们的，就是耶和华你们的　神的命令。 (申命记 4:2)

Do not add to what I command you and do not subtract from it, but keep the commands of the Lord your God that I give you. (Deuteronomy 4:2)