'Mercy' in the Bible

And they put everything in the town to the curse; men and women, young and old, ox and sheep and ass, they put to death without mercy.

Then, after the destruction of all the people of Ai in the field and in the waste land where they went after them, and when all the people had been put to death without mercy, all Israel went back to Ai, and put to death all who were in it without mercy.

That day Joshua took Makkedah, and put it and its king to the sword; every soul in it he gave up to the curse without mercy: and he did to the king of Makkedah as he had done to the king of Jericho.

And the Lord gave Lachish into the hands of Israel, and on the second day he took it, putting it and every person in it to the sword without mercy, as he had done to Libnah.

And they put every person in it to death without mercy, giving every living thing up to the curse, and burning Hazor.

And all the goods taken from these towns, and their cattle, the children of Israel kept for themselves; but every man they put to death without mercy, till their destruction was complete, and there was no one living.

For it was the Lord’s intention to harden their hearts, so that they would engage Israel in battle, be completely destroyed without mercy, and be annihilated, just as the Lord had commanded Moses.

(But the limit of the children of Dan was not wide enough for them; so the children of Dan went up and made war on Leshem and took it, putting it to the sword without mercy, and they took it for their heritage and made a place for themselves there, giving it the name of Leshem-dan, after the name of their father, Dan.)

And Joshua said to the people, You are not able to be the servants of the Lord, for he is a holy God, a God who will not let his honour be given to another: he will have no mercy on your wrongdoing or your sins.