2 Samuel 14:11

Then said she, pursuing the advantage she had gained till now, I pray thee, let the king remember the Lord, thy God, she pleaded with the king for his interference to the point of assuring her son's safety by an oath, that thou wouldest not suffer the revengers of blood to destroy any more, lest they destroy my son. The destruction already wrought should not be increased. And he, David, said. As the Lord liveth, there shall not one hair of thy son fall to the earth. As her appeals grew in fervor, so his assurances in emphasis.