David’s conversation with Saul after the rout of the Philistines was heard, no doubt, by several of the royal entourage – courtiers, stewards, military men, attendants and the like – but one of the hearers discovered that David was speaking the thoughts of his own heart. Jonathan and David were truly kindred spirits. When the moment came they conversed, eagerly, understandingly, and unreservedly.
“The soul of Jonathan was knit with the soul of David, and Jonathan loved him as his own soul.” (1 Samuel 18:1)
The initiative seems to have come from Jonathan; David would not have presumed to seek comradeship with the king’s son. David was lovable in himself and for himself; he inspired friendship and confidence. Men would follow him even though the way led into the valley of the shadow of death. Jonathan was moved to hand his apparel, his sword, his bow and his girdle to David, as a mark of the new-made covenant between them. David, who had refused Saul’s useless armour, received his son’s tokens of deep affection and friendship.
Excerpt from The man David by Harry Tennant
which can be bought at the Christadelphian Magazine Bookshop