We Expect Harsh Judgement On Others When They Make Mistakes

Judge not, and ye shall not be judged: condemn not, and ye shall not be condemned: forgive, and ye shall be forgiven: (Luke 6:37 KJV).

Many times we expect harsh judgement on others when they make mistakes but mercy on ourselves when we make mistakes. In the Bible, there are three such incidents.

Joshua wants Moses to forbid Eldad and Medad from prophesy.
Numbers 11:26-29 KJV
But there remained two of the men in the camp, the name of the one was Eldad, and the name of the other Medad: and the spirit rested upon them; and they were of them that were written, but went not out unto the tabernacle: and they prophesied in the camp. And there ran a young man, and told Moses, and said, Eldad and Medad do prophesy in the camp. And Joshua the son of Nun, the servant of Moses, one of his young men, answered and said, My lord Moses, forbid them. And Moses said unto him, Enviest thou for my sake? would God that all the LORD's people were prophets, and that the LORD would put his spirit upon them!

John the Apostle want Jesus to forbid those who are not with them to cast devils in His name.
Luke 9:49-50 KJV
And John answered and said, Master, we saw one casting out devils in thy name; and we forbade him, because he followeth not with us. And Jesus said unto him, Forbid him not: for he that is not against us is for us.

John the Apostle want Jesus to bring fire from heaven on the Samaritan village who refused to provide them shelter.
Luke 9:51-56 KJV
And it came to pass, when the time was come that he should be received up, he steadfastly set his face to go to Jerusalem, And sent messengers before his face: and they went, and entered into a village of the Samaritans, to make ready for him.And they did not receive him, because his face was as though he would go to Jerusalem. And when his disciples James and John saw this, they said, Lord, wilt thou that we command fire to come down from heaven, and consume them, even as Elijah did? But he turned, and rebuked them, and said, Ye know not what manner of spirit ye are of. For the Son of man is not come to destroy men's lives, but to save them. And they went to another village.