Aaron
Exodus 39:43
And Moses did look upon all the work, and, behold, they had done it as the LORD had commanded, even so had they done it: and Moses blessed them.
Exodus 40:16
Thus did Moses: according to all that the LORD commanded him, so did he.
Deuteronomy 4:2
Ye shall not add unto the word which I command you, neither shall ye diminish ought from it, that ye may keep the commandments of the LORD your God which I command you.
Deuteronomy 12:32
What thing soever I command you, observe to do it: thou shalt not add thereto, nor diminish from it.
1 Samuel 15:22
And Samuel said, Hath the LORD as great delight in burnt offerings and sacrifices, as in obeying the voice of the LORD? Behold, to obey is better than sacrifice, and to hearken than the fat of rams.