'Mercy' in the Bible

They that observe lying vanities forsake their own mercy.

He prayed to the Lord and said, "Oh, Lord, this is just what I thought would happen when I was in my own country. This is what I tried to prevent by attempting to escape to Tarshish! -- because I knew that you are gracious and compassionate, slow to anger and abounding in mercy, and one who relents concerning threatened judgment.

And am I not to have mercy on Nineveh, that great town, in which there are more than a hundred and twenty thousand persons without the power of judging between right and left, as well as much cattle?