I cannot go beyond the commandment of the Lord. — Hebrew, the mouth of the Lord: the same expression which is used in Numbers 22:18, where the Authorised Version has “the word of the Lord.”
Related Commentaries of Numbers 24:13
Numbers 24:13
13 If Balak would give me his house full of silver and gold, I cannot go beyond the commandment of the LORD, to do either good or bad of mine own mind; but what the LORD saith, that will I speak?