But before we go on to this, it will be suitable for us at this place to dwell for a little on the remarkable friendship between David and Jonathan--a beautiful oasis in this wilderness history,--one of the brightest gems in this book of Samuel.

It was a striking proof of the ever mindful and considerate grace of God, that at the very opening of the dark valley of trial through which David had to pass in consequence of Saul's jealousy, he was brought into contact with Jonathan, and in his disinterested and sanctified friendship, furnished with one of the sweetest earthly solaces for the burden of care and sorrow. The tempest suddenly let loose on him must have proved too vehement, if he had been left in Saul's dark palace without one kind hand to lead him on, or the sympathy of one warm heart to encourage him; the spirit of faith might have declined more seriously than it did, had it not been strengthened by the bright faith of Jonathan. It was plain that Michal, though she had a kind of attachment to David, was far from having a thoroughly congenial heart; she loved him, and helped to save him, but at the same time bore false witness against him (chap. xix. 17). In his deepest sorrows, David could have derived little comfort from her. Whatever gleams of joy and hope, therefore, were now shed by human companionship across his dark firmament, were due to Jonathan. In merciful adaptation to the infirmities of his human spirit, God opened to him this stream in the desert, and allowed him to refresh himself with its pleasant waters; but to show him, at the same time, that such supplies could not be permanently relied on, and that his great dependence must be placed, not on the fellowship of mortal man, but on the ever-living and ever-loving God, Jonathan and he were doomed, after the briefest period of companionship, to a lifelong separation, and the friendship which had seemed to promise a perpetual solace of his trials, only aggravated their severity, when its joys were violently reft away.

The Expositor's Bible: The First Book of Samuel — Part 171

In another view, David's intercourse with Jonathan served an important purpose in his training. The very sight he constantly had of Saul's outrageous wickedness might have nursed a self-righteous feeling,--might have encouraged the thought, so agreeable to human nature, that as Saul was rejected by God for his wickedness, so David was chosen for his goodness. The remembrance of Jonathan's singular virtues and graces was fitted to rebuke this thought; for if regard to human goodness had decided God's course in the matter, why should not Jonathan have been appointed to succeed his father? From the self-righteous ground on which he might have been thus tempted to stand, David would be thrown back on the adorable sovereignty of God; and in deepest humiliation constrained to own that it was God's grace only that made him to differ from others.

The Expositor's Bible: The First Book of Samuel — Part 171