There’s one atonement provided by God—the death on the cross of the messiah.
That atonement is sufficient for everybody. Just how far God will apply it is up to Him, not us.
(Jews who died in the Holocaust died because of their being picked by God as the Chosen People; and, like it or not, were therefore killed because of their association with God’s plan. How is God going to look at that? I don’t know; ask God. But their entrance into heaven isn’t granted because of their good works—a lot of sinful Jews also died in the Holocaust; but
because an atonement was made for them, just as at Passover—it wasn’t the good or the bad who made it, but those who had the mark of the blood of the lamb on their door.)
The atonement has been made, and it (not our own works) is what restores us to God.
“Jews who died in the Holocaust died because of their being picked by God as the Chosen People; and, like it or not, were therefore killed because of their association with God’s plan”
To clarify, so this doesn’t get misunderstood: God decided to use a people, the Jews. Hence they became the targets of those opposed to God’s plan. And that’s why they became targets in the Holocaust. That means they had a privilege not given even to angels—to suffer for God.
Is that enough to get someone into paradise? It would be if we could earn paradise. But paradise is given freely. Even the best of Jews would have died on Passover if they had been out in the street and not inside a house marked with the lamb’s blood. Even the worst survived if inside such a house.
How far is God going to stretch the atonement he has provided this time with the cross and the death of the lamb of God? We don’t know, because we aren’t told that.
But we do accept that this is the one atonement that God has provided.