Charles Spurgeon Commentary 1 Samuel 20:12-15

"And Jonathan said unto David, Jehovah, the God of Israel, [be witness]: when I have sounded my father about this time to-morrow, [or] the third day, behold, if there be good toward David, shall I not then send unto thee, and disclose it unto thee? Jehovah do so to Jonathan, and more also, should it please my father to do thee evil, if I disclose it not unto thee, and send thee away, that thou mayest go in peace: and Jehovah be with thee, as he hath been with my father. And thou shalt not only while yet I live show me the lovingkindness of Jehovah, that I die not; but also thou shalt not cut off thy kindness from my house for ever; no, not when Jehovah hath cut off the enemies of David every one from the face of the earth." — 1 Samuel 20:12-15 (ASV)

And Jonathan said to David, O LORD God of Israel, when I have sounded my father about tomorrow any time, or the third day, and, behold, if there is good toward David, and I then do not send to you, and show it to you; the LORD do so and much more to Jonathan: but if it pleases my father to do you evil, then I will show it to you, and send you away, that you may go in peace: and the LORD be with you, as he has been with my father. And you shall not only while I still live show me the kindness of the LORD, that I do not die: But also you shall not cut off your kindness from my house forever: no, not when the LORD has cut off the enemies of David every one from the face of the earth.

In Jonathan's great love, he wished not only to be David's friend himself, but that all his children should be in love with the same valiant hero. Brothers and sisters, our love to Christ makes us long to see our children love him, too. I will not believe that you have any love to Christ unless you pray that your boys and your girls may also love him. Dear children of godly parents, our heart's desire and prayer to God for you is that you may love your mother's God, and trust your father's Saviour.