What does the stone represent in the story of David and Goliath?

In the encounter between David and Goliath, the smooth stone represents Jesus Christ, the perfect and spotless Lamb of God. Just as David used the stone to bring down the giant, Christ's sacrifice serves as the decisive blow against sin and death. Galatians 3:13 highlights that Christ became a curse for us, thus fulfilling the requirement for redemption. This smooth stone, emblematic of Christ's purity and effectiveness in accomplishing salvation, reassures believers of their secure position in Him and the complete nature of His victory over their enemies.