Bible Verses About Presumption: Korah &c

And when they had stood up against Moses and Aaron, they said: Let it be enough for you, that all the multitude consisteth of holy ones, and the Lord is among them: Why lift you up yourselves above the people of the Lord?

And putting fire in them to morrow, put incense upon it before the Lord: and whomsoever he shall choose, the same shall be holy: you take too much upon you, ye sons of Levi.