[papertyger]

Korah's rebellion was not against Moses but against what God had specifically stated and appointed.

Uhm, yeah.

Num 16:3

And they gathered themselves together against Moses and against Aaron, and said unto them, Ye take too much upon you, seeing all the congregation are holy, every one of them, and the LORD is among them: wherefore then lift ye up yourselves above the congregation of the LORD?...28 And Moses said, Hereby ye shall know that the LORD hath sent me to do all these works; ...

[HarleyD]

Uhm, yeah. ...Num 16:3

I'd suggest you read the rest of Numbers 16.

Num 16:8 Then Moses said to Korah, "Hear now, you sons of Levi,
Num 16:9 is it not enough for you that the God of Israel has separated you from the rest of the congregation of Israel, to bring you near to Himself, to do the service of the tabernacle of the LORD, and to stand before the congregation to minister to them;
Num 16:10 and that He has brought you near, Korah, and all your brothers, sons of Levi, with you? And are you seeking for the priesthood also?
Num 16:11 "Therefore you and all your company are gathered together against the LORD; but as for Aaron, who is he that you grumble against him?"