How do we know that Jesus is our champion?

In the sermon, David is likened to Jesus Christ, who comes as our champion to save His people. Just as David was sent by his father to confront Goliath after 40 days of fear among the Israelites, Jesus was sent by God the Father to confront sin and death for the sake of His chosen people. In the face of insurmountable challenges, it is through Jesus' victory over the grave that believers find hope and salvation. This parallel emphasizes that our confidence in overcoming sin lies solely in Christ’s completed work, highlighting the essential need for a champion.