How do we know the story of David and Goliath reflects the gospel?

The account of David and Goliath is not merely a tale of courage but a profound illustration of the gospel's core message. In 1 Samuel 17, Goliath stands as a representation of sin and death, imposing fear upon the Israelites, just as sin does to humanity. David’s victory over Goliath symbolizes Christ's victory over sin, death, and the devil. Additionally, David confronts Goliath not with armor but with a sling and stones, highlighting that salvation comes through God alone, not through human means or strengths. Ultimately, David's triumph assures believers of Christ's triumph over our greatest enemy.