How do we know Jesus redeems us from sin?

In Reformed theology, the concept of redemption through Christ is central. The Greek term used for redemption, such as in Galatians 4:5, emphasizes that Christ came into the world to buy His people out of the slave market of sin. He redeemed us from the bondage of sin, death, and even the fear of death, offering us freedom that is secured by His sacrifice. As Hebrews 2 discusses, Jesus took on flesh and blood to destroy the power of death for those who were held captive by it. His work on the cross assures us that we are not only forgiven but also liberated from the chains of sin and death, making His redemption complete and effective for His people.