'Spare' in the Bible

When he became king and occupied the throne, he killed Baasha's entire family. He did not spare any male belonging to him; he killed his relatives and his friends.

His servants said to him, “Consider this: we have heard that the kings of the house of Israel are merciful kings. So let’s put sackcloth around our waists and ropes around our heads, and let’s go out to the king of Israel. Perhaps he will spare your life.”

So they dressed with sackcloth around their waists and ropes around their heads, went to the king of Israel, and said, “Your servant Ben-hadad says, ‘Please spare my life.’”So he said, “Is he still alive? He is my brother.”