1 Chronicles 20:8
David was not the only giant-killer in Israel. There were at least three other men in his army who had that distinction. David was just the first giant-killer. And he subdued Goliath while only a boy. His victory in his youth set the standard by which all other giant killing would be measured. And there were many bad Philistine giants that needed to go down in defeat.
The three giant killing soldiers were diverse, but ready to display the bravery of their king. Sibbecai the Hushathite was the first on this distinct list. He killed a champion name Sippai and ran off the Philistine threat. The second great giant-slayer was Elhanan the son of Jair. He brought down Lahmi, the brother of Goliath. Again, the Philistine threat was removed from Israel The final brave dispatcher of giants was Jonathan, the nephew of King David. He fought and killed a 24-digited beast of a man. The giant remains un-named except that he taunted Israel. And Jonathan stood up in battle and silenced the mocking threats for good.
God used these three men to remove the threats to peace in Israel under David. In so doing, more heroes joined with David in seeing God defeat the threatening giants for the sake of His people. And their bravery inspired a nation. God will use men who are brave enough to stride into a toe-to-toe fight with a giant. And when God uses such a man for His glory, the giants go down!