How do we know salvation is fulfilled in Christ?

The fulfillment of salvation in Christ is grounded in God's eternal covenants and promises. Luke 1:68-70 speaks of the visitation and redemption brought forth by God through Jesus, highlighting that this was prophesied since the world began. The Old Testament prophets, inspired by the Holy Spirit, foretold of a Savior who would save His people from their sins. This assurance is validated in the New Testament, where Christ accomplishes His work of redemption, connecting the Old Testament promises with their New Testament realization.