However, the king spared Mephibosheth, son of Jonathan, son of Saul, because of the oath sworn before the Lord between David and Jonathan, son of Saul.
If a man makes a solemn promise to the Lord, or pledges to do something by swearing an oath, he must not break his promise. He must do everything he said he would.
unless when we enter this land, you hang a scarlet cord in the window through which you lowered us. You must gather together in the house your father and mother and brothers—all the family.