And afterward Moses and Aaron came, and said unto Pharaoh, Thus saith the LORD, the God of Israel, Let my people go, that they may hold a feast unto me in the wilderness.
But the LORD said unto me, Say not, I am a child: for to whomsoever I shall send thee thou shalt go, and whatsoever I shall command thee thou shalt speak.
Ye shall not add unto the word which I command you, neither shall ye diminish from it, that ye may keep the commandments of the LORD your God which I command you.