Miriam and Aaron criticized Moses because of the Cushite woman he married (for he had married a Cushite woman).

The Israelites did not attack them because the leaders of the community had sworn an oath to them in the name of the Lord God of Israel. The whole community criticized the leaders,

Then Gideon approached the men of Succoth and announced, "Here are Zebah and Zalmunna. You criticized me about them when you said, "Do you have Zebah and Zalmunna in custody already, so that we should give food to your weary army?'"

"You have criticized me sharply," says the Lord, "but you ask, 'How have we criticized you?'

“Do not judge and criticize and condemn [others unfairly with an attitude of self-righteous superiority as though assuming the office of a judge], so that you will not be judged [unfairly].

For just as you [hypocritically] judge others [when you are sinful and unrepentant], so will you be judged; and in accordance with your standard of measure [used to pass out judgment], judgment will be measured to you.

and a sound message that cannot be criticized, so that any opponent will be at a loss, because he has nothing evil to say about us.