"Interestingly, the early church presented Noah's ark as a symbol of Christ. Some of the earliest drawings of Christ are representations of an ark affixed to a cross indicating that Christ is our ark. He is the vessel of mercy that we, once inside, can safely ride through the floods of God's judgment. God has always been merciful, and never more so than by giving himself in Christ. Our only hope is God's mercy. As Christians, we have no ground for pride. We have sinned against God and are morally bankrupt. We have completely spent our small resources and now cannot provide for our most basic spiritual needs. We are entirely dependent upon God's mercy and grace for salvation. This is why the cross of Christ must always be at the center of our worship, whether public or private."
The Message of the Old Testament by Mark Dever