181 After David had finished talking with Saul, he met Jonathan, the king's son. There was an immediate bond between them, for Jonathan loved David. 2 From that day on Saul kept David with him and wouldn't let him return home. 3 And Jonathan made a solemn pact with David, because he loved him as he loved himself. 4 Jonathan sealed the pact by taking off his robe and giving it to David, together with his tunic, sword, bow, and belt.
Matthew Henry's Commentary on 1 Samuel 18:1-4
Commentary on 1 Samuel 18:1-5
(Read 1 Samuel 18:1-5)
The friendship of David and Jonathan was the effect of Divine grace, which produces in true believers one heart and one soul, and causes them to love each other. This union of souls is from partaking in the Spirit of Christ. Where God unites hearts, carnal matters are too weak to separate them. Those who love Christ as their own souls, will be willing to join themselves to him in an everlasting covenant. It was certainly a great proof of the power of God's grace in David, that he was able to bear all this respect and honour, without being lifted up above measure.