How do we know that redemption is solely God's work?

Redemption is emphasized throughout Scripture as a divine act accomplished by Christ's sacrificial death. Ephesians 2:8-9 explicitly states that we are saved by grace through faith, which is a gift from God, not something we can earn or achieve through our own efforts. This reflects the Reformed understanding of salvation: it is entirely by God's grace and not of works that anyone should boast. The shedding of Christ's blood, a central theme in 1 Peter 1:18-19, signifies that our redemption is not based on our merits but on His perfect sacrifice, underscoring the fact that it is God's work that redeems us.