But the king spared Mephibosheth, the son of Jonathan the son of Saul, because of the LORD’S oath that was between them, between David and Jonathan the son of Saul.
If a man vows a vow unto the LORD, or swears an oath to bind his soul with a bond; he shall not break his word, he shall do according to all that proceeds out of his mouth.
Behold, when we come into the land, you shall bind this line of scarlet thread in the window which you did let us down by: and you shall bring your father, and your mother, and your brethren, and all your father's household, home unto you.