If you judge someone else, you have no excuse for it. When you judge another person, you are judging yourself. You do the same things you blame others for doing.
References for Romans 2:1
We know that when God judges those who do evil things, he judges fairly.
Though you are only a human being, you judge others. But you yourself do the same things. So how do you think you will escape when God judges you?
Do you make fun of God's great kindness and favor? Do you make fun of God when he is patient with you? Don't you realize that God's kindness is meant to turn you away from your sins?
But you are stubborn. In your heart you are not sorry for your sins. You are storing up anger against yourself. The day of God's anger is coming. Then his way of judging fairly will be shown.
God "will give to each person in keeping with what he has done."(Psalm 62:12; %"Proverbs 24:12)