How do we know the gospel is centered on grace?

The gospel message is fundamentally about salvation by God's grace, a truth revealed throughout the entirety of Scripture. It speaks to the forgiveness of sins and the imputation of righteousness, securing the actual salvation of God's chosen people rather than merely making salvation a possibility. This grace is conditioned solely on the Lord Jesus Christ, who fulfilled every requirement for salvation through His obedience unto death. In this, the gospel reflects not a potentiality but a surety for those whom God has chosen and redeemed.