Having obtained Eternal Redemption for us !
Heb 9:12
12 Neither by the blood of goats and calves, but by his own blood he entered in once into the holy place, having obtained eternal redemption for us.
Who are the Us ? Why it is the Heirs of God, Joint Heirs with Jesus Christ as Per Heb 1:14
14Are they not all ministering spirits, sent forth to minister for them who shall be heirs of salvation?
Heb 6:17
Wherein God, willing more abundantly to shew unto the heirs of promise the immutability of his counsel, confirmed it by an oath:
Heb 11:9
By faith he sojourned in the land of promise, as in a strange country, dwelling in tabernacles with Isaac and Jacob, the heirs with him of the same promise:
Heb 1:2
Hath in these last days spoken unto us by his Son, whom he hath appointed heir of all things, by whom also he made the worlds;
Rom 8:17
And if children, then heirs; heirs of God, and joint-heirs with Christ; if so be that we suffer with him, that we may be also glorified together.
Rom 9:8
8That is, They which are the children of the flesh, these are not the children of God: but the children of the promise are counted for the seed.
This was not a temporal Redemption, but Eternal, it's effects are outside of time. It's infinite value was Eternal and Immutable in God's sight. It being Eternal, its forgiveness is from everlasting to everlasting Ps 103:12,17
12As far as the east is from the west, so far hath he removed our transgressions from us.
17But the mercy of the LORD is from everlasting to everlasting upon them that fear him, and his righteousness unto children's children;
It comprehends from when Christ offered Himself on the Cross, and made Atonement for all the sins of all of the Election of grace, who had lived from Adam, to include all of the Election of Grace then present, and yet all that should live upon the Earth until the end of time. This redemption is without date, and of everlasting duration, and existed in the Eternal Mind of God, since the existence of God ! If we can tell when God began to exist, or when He can cease to exist, then we can know the beginning and ending of the Eternal Redemption Christ obtained for all those He died for. For it was Eternal in the engagements that were entered into [ Christ's Suretyship of the Everlasting Covenant with the Father and the Spirit], in the accomplishments of what it has done, and the Eternal Glory that shall be revealed ! 1 Pet 5:10
But the God of all grace, who hath called us unto his eternal glory by Christ Jesus, after that ye have suffered a while, make you perfect, stablish, strengthen, settle you.