Goliath's words to David reveal his scorn and disbelief that a mere shepherd boy would challenge him. By asking if he is a dog, Goliath implies that David's approach with a staff is not only disrespectful but also laughable. This reflects Goliath's confidence in his own strength and his underestimation of David. The Philistine's curse by his gods further indicates the spiritual battle at play, as Goliath relies on his deities for victory.
David, however, represents a different kind of warrior, one whose strength comes from his faith in the God of Israel. This encounter is not just a physical confrontation but a clash of beliefs and values. David's courage and reliance on God contrast sharply with Goliath's reliance on size and weapons. The story encourages believers to trust in God's power and presence, even when facing seemingly insurmountable challenges. It teaches that faith and courage can triumph over arrogance and intimidation, reminding us that God empowers those who trust in Him.