18 After this a battle took place with the Philistines, at Gob; then Sibbecai the Hushathite killed Saph, who was one of the descendants of the giants. 19 Then there was another battle with the Philistines at Gob; and Elhanan son of Jaare-oregim, the Bethlehemite, killed Goliath the Gittite, the shaft of whose spear was like a weaver's beam. 20 There was again war at Gath, where there was a man of great size, who had six fingers on each hand, and six toes on each foot, twenty-four in number; he too was descended from the giants. 21 When he taunted Israel, Jonathan son of David's brother Shimei, killed him. 22 These four were descended from the giants in Gath; they fell by the hands of David and 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.