Complete Commentary on the Whole Bible, by Matthew Henry, at sacred-texts.com
2 Kings (2 Samuel) Chapter 1
(Sa2 1:1-10) Tidings brought to David of the death of Saul.
(Sa2 1:11-16) The Amalekite is put to death.
(Sa2 1:17-27) David's lamentation for Saul and Jonathan.
The blow which opened David's way to the throne was given about the time he had been sorely distressed. Those who commit their concerns to the Lord, will quietly abide his will. It shows that he desired not Saul's death, and he was not impatient to come to the throne.
David was sincere in his mourning for Saul; and all with him humbled themselves under the hand of God, laid so heavily upon Israel by this defeat. The man who brought the tidings, David put to death, as a murderer of his prince. David herein did not do unjustly; the Amalekite confessed the crime. If he did as he said, he deserved to die for treason; and his lying to David, if indeed it were a lie, proved, as sooner or later that sin will prove, lying against himself. Hereby David showed himself zealous for public justice, without regard to his own private interest.
Kasheth, or "the bow," probably was the title of this mournful, funeral song. David does not commend Saul for what he was not; and says nothing of his piety or goodness. Jonathan was a dutiful son, Saul an affectionate father, therefore dear to each other. David had reason to say, that Jonathan's love to him was wonderful. Next to the love between Christ and his people, that affection which springs form it, produces the strongest friendship. The trouble of the Lord's people, and triumphs of his enemies, will always grieve true believers, whatever advantages they may obtain by them.