'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 advisers said to him, "Look, we have heard that the kings of the Israelite dynasty are kind. Allow us to put sackcloth around our waists and ropes on our heads and surrender to the king of Israel. Maybe he will spare our lives."