'Mercy' in the Bible

And the angel of Jehovah answered and said, Jehovah of hosts, how long wilt thou not have mercy on Jerusalem and on the cities of Judah, against which thou hast had indignation these seventy years?

And I will strengthen the house of Judah, and I will save the house of Joseph, and I will bring them back again; for I will have mercy upon them; and they shall be as though I had not cast them off: for I am Jehovah their God, and I will answer them.