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.
Then the ruler of Bezek said, “I cut off the thumbs and big toes of 70 kings. And they had to eat pieces of food that fell from my table. Now God has paid me back for what I did to them.” The men of Judah took the ruler of Bezek to Jerusalem, and he died there.
Jehoiada the priest gave a command to the captains who were in charge of the soldiers. Jehoiada told them, “Take Athaliah outside of the Temple area. Kill any of her followers, but don’t kill them in the Lord’s Temple.”
The whole valley where dead bodies and ashes are thrown and all the terraces down to the bottom of Kidron Valley all the way to the corner of Horse Gate will be holy to the Lord. The city of Jerusalem will never again be torn down or destroyed.”