How do we know that Christ's death was for our salvation?

The assurance of Christ's saving work is found in John 6:51 where Jesus states He gives His flesh for the life of the world. This declaration is crucial for understanding the purpose of Jesus' death—it was a substitutionary sacrifice for sinners. Additionally, Romans 8:32 affirms that God, having delivered His Son for us, will freely give us all things, reinforcing the idea that Christ's death was effective and purposeful. The theological implications are profound, as they reveal that without His death, humanity remains dead in trespasses and sins, but through Him, believers receive life and salvation.