'Enough' in the Bible

Is it not enough that you have taken us from a land flowing with milk and honey, to put us to death in the waste land, but now you are desiring to make yourself a chief over us?

And lifting up his hand, Moses gave the rock two blows with his rod: and water came streaming out, and the people and their cattle had drink enough.

Then the Lord said to Moses and Aaron, Because you had not enough faith in me to keep my name holy before the children of Israel, you will not take this people into the land which I have given them.

Come now, in answer to my prayer, and put a curse on this people, for they are greater than I: and then I may be strong enough to overcome them and send them out of the land: for it is clear that good comes to him who has your blessing, but he on whom you put your curse is cursed.

Anyone causing the death of another is himself to be put to death on the word of witnesses: but the word of one witness is not enough.