(3) Made a covenant.--The son of the first Hebrew king recognised in David a kindred spirit. They were one in their God, in their faith, in their devotion to the Divine will. Jonathan recognised in the young shepherd, who unarmed went out alone to meet the mighty Philistine warrior, the same spirit of sublime faith in the Invisible King which had inspired him in days far back to go forth alone with his armour-bearer to attack and capture the Philistine stronghold, when he spoke those memorable words which enable us to understand the character of Jonathan: "It may be that the Lord will work for us: for there is no restraint to the Lord to save by many or by few" (1Samuel 14:6).

The great friendship, which has been the admiration of succeeding generations, began with the strong faith in the Eternal common to the two friends. Throughout its duration the link which united them was an intense desire to do the will of Him who, as true Hebrew patriots, they felt loved Israel; and when the friends parted for the last time in the wilderness of Ziph, we are told how the elder (Jonathan) strengthened the younger (David's) "hand in God" (1Samuel 23:16).

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.Then Jonathan and David made a covenant,.... A covenant of friendship; entered into a solemn agreement to keep up and maintain a cordial respect to each other, and to support each other's interest both in life and after death, whoever was the survivor; and in consequence of this David had a friend at court, when Saul fell out with him, and who pleaded his cause, and discovered his father's plots, and was the means of preserving David's life:

because he loved him as his own soul; so that this covenant was not founded in mere words, but in sincere and cordial affection, and was lasting and inviolable.