1 Samuel 17:42
And when the Philistine looked about, and saw David, he disdained him: for he was but a youth, and ruddy, and of a fair countenance.
Cross-reference
1 Samuel 17:33
Parallel
In 1 Samuel 17:33, Saul also dismisses David as a youth, reinforcing the underestimation theme from Goliath's perspective.
1 Samuel 16:12
Allusion
1 Samuel 16:12 describes David as ruddy and handsome—the same appearance that causes Goliath to disdain him here.