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.
20:11-23 Jonathan faithfully promises that he would let David know how he found his father affected towards him. It will be kindness to ourselves and to ours, to secure an interest in those whom God favours, and to make his friends ours. True friendship rests on a firm basis, and is able to silence ambition, self-love, and undue regard for others. But who can fully understand the love of Jesus, who gave himself as a sacrifice for rebellious, polluted sinners! how great then ought to be the force and effects of our love to him, to his cause, and his people!
