Yes, you must show mercy to others. If you do not show mercy, then God will not show mercy to you when he judges you. But the one who shows mercy can stand without fear before the Judge.
“The Lord, the God of Israel, promised that your father’s family would serve him forever. But now the Lord says, ‘That will never be! I will honor people who honor me, but bad things will happen to those who refuse to respect me.
But people of Jacob, I must say these things. The Lord is losing his patience because of the bad things you did. If you lived right, I could say nice words to you.