Jonathan's Covenant with David

181 After David had finished talking with Saul, Jonathan became one in spirit with David, and he loved him as himself. 2 From that day Saul kept David with him and did not let him return home to his family. 3 And Jonathan made a covenant with David because he loved him as himself. 4 Jonathan took off the robe he was wearing and gave it to David, along with his tunic, and even his sword, his bow and his 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.