“So Ionathan made a couenant with the house of Dauid, saying, Let the Lord euen require it at the hande of Dauids enemies.”
1611 King James Version (KJV)
20:16 A covenant - The covenant which before was personal, he now extends to the whole house of David, expecting a reciprocal enlargement of it on David's side, which doubtless he obtained. Enemies - If either I or any of my house shall break this covenant, and shall prove enemies to David or to his house, let the Lord, the witness of this covenant, severely punish the violators of it.