Tim Keller discusses the significance of the Red Sea crossing in the Old Testament and its connections to the New Testament, emphasizing that salvation is about getting out of bondage on different levels.
Keller goes on to explain that everyone is in bondage to the law, their sinful nature, and idols and mentions how individuals can become enslaved to their own ministries, careers, or success. Redemption is about getting out of bondage, and grace is the means of getting out. Keller uses the story of the Red Sea to demonstrate the importance of grace, highlighting the fact that Christianity is unique because it involves a one-time transition into the kingdom of His Son through crossing over.
Finally, Keller discusses that Jesus is the ultimate mediator, enabling Christians to be recreated and freed from idols.