for this reason He is the Mediator of the new covenant, by means of death, for the redemption of the transgressions under the first covenant, that those who are called may receive the promise of the eternal inheritance” (Heb. 9:15). In other words, the New Covenant is effective in the salvation of the Old Testament saints. How were David’s sins washed away? By the blood of Christ. How was Abraham put right with God? Through faith in the gospel. But the blood of Christ is the blood of the New Covenant. And the gospel is the message of that same covenant.
