How do we know the rainbow represents Christ?

In the sermon, the preacher draws a connection between the rainbow and Christ, emphasizing that just as the rainbow provides assurance of God's covenant, Christ embodies that covenant fulfillment. In Ezekiel 1:26-28 and Revelation 4:3, the likeness of the rainbow is tied to the glory of the Lord, and it serves as a visible sign of God's promises. The rainbow signifies the light of salvation that shines through the dark clouds of human sin and suffering, ultimately pointing to Christ, who is our Mediator and the one who reconciles us to God through His sacrifice.