18 After this there was again war with the Philistines at Gob; then Sib'becai the Hu'shathite slew Saph, who was one of the descendants of the giants. 19 And there was again war with the Philistines at Gob; and Elha'nan the son of Ja'areor'egim, the Bethlehemite, slew Goliath the Gittite, the shaft of whose spear was like a weaver's beam. 20 And there was again war at Gath, where there was a man of great stature, who had six fingers on each hand, and six toes on each foot, twenty-four in number; and he also was descended from the giants. 21 And when he taunted Israel, Jonathan the son of Shim'e-i, David's brother, slew him. 22 These four were descended from the giants in Gath; and they fell by the hand of David and by the hand of his servants.
Matthew Henry's Commentary on 2 Samuel 21:18-22
Commentary on 2 Samuel 21:15-22
(Read 2 Samuel 21:15-22)
These events seem to have taken place towards the end of David's reign. David fainted, but he did not flee, and God sent help in the time of need. In spiritual conflicts, even strong saints sometimes wax faint; then Satan attacks them furiously; but those who stand their ground and resist him, shall be relieved and made more than conquerors. Death is a Christian's last enemy, and a son of Anak; but through Him that triumphed for us, believers shall be more than conquerors at last, even over that enemy.