When you read the David vs. Goliath account in 1 Samuel 17 you’ll notice David never once acknowledges him as giant. He only mentions him as an uncircumcised Philistine who dared to defy the LORD of hosts.
Then, when the battle raged, David doesn’t lag back and wait for Goliath to make the first move. David charged Goliath, sling in hand, armed with full persuasion of God’s faithfulness.