What is the significance of the rainbow covenant?

In Genesis 9, the rainbow is established as a covenant sign between God and Noah, signifying the promise that God will not flood the earth again. This covenant reflects God's mercy and serves as a reminder of His commitment to His creation. Importantly, it also points to the coming salvation through Christ, who is our true ark. The rainbow symbolizes hope and assurance for God's people, reassuring us of His faithfulness in the midst of judgment. The covenant ultimately highlights the unilateral nature of God’s promises—His determination to save sinners rooted in grace.