So why did David lament? This wasn’t a corporate time of mourning by Israel as a people. This was David, the target of Saul’s spear, whom he loathed and plotted against and drove into enemy territory!  This is David lamenting the death of his greatest enemy. However, David can relate on one level to Saul. He understands what it means to be God’s anointed. David recognizes that Saul was God’s anointed, even with all his inadequacies. This was a God given compassion.  David knows that Saul’s legacy will be failure and defeat due to God's judgement over him. Dying at the end of the total collapse of his reign as King, being remembered only for the failures, not the successes. He died with no nobility. No valor. No honour. This is a reputation that David wants avoided at all costs for the sake of God’s glory.  Also, Jonathan’s love for David had everything to do with David’s Kingship. In the same way we should put God ahead of our earthly relationships - including our own marriages - David and Jonathan are enamoured by God and His rule and reign in their lives, which superseded even the desires for intimacy.  As Christians, our trajectory is God given eternity, not self satisfying humanity. David’s perspective was always the big picture, and he wanted Israel to remember that.