Little Apocalypse "The Mystery" Tears Wiped, Death Swallowed

The "Mystery" had to be fulfilled in the New Testament and it was. We see clearly what that mystery was. It had to be a fulfilled reality in order for the feast for all peoples to take place.
Here are the passages I read:
Isaiah 64:4 (ESV)
From of old no one has heard or perceived by the ear, no eye has seen a God besides you, who acts for those who wait for him.
1 Corinthians 2:8-10 (ESV)
None of the rulers of this age understood this, for if they had, they would not have crucified the Lord of glory. 9 But, as it is written,
“What no eye has seen, nor ear heard,
nor the heart of man imagined,
what God has prepared for those who love him”-
10 these things God has revealed to us through the Spirit. For the Spirit searches everything, even the depths of God.
Romans 16:25 (ESV)
Now to him who is able to strengthen you according to my gospel and the preaching of Jesus Christ, according to the revelation of the mystery that was kept secret for long ages
Ephesians 1:8-10 (ESV)
which he lavished upon us, in all wisdom and insight 9 making known[a] to us the mystery of his will, according to his purpose, which he set forth in Christ 10 as a plan for the fullness of time, to unite all things in him, things in heaven and things on earth.
For this reason I, Paul, a prisoner of Christ Jesus on behalf of you Gentiles- 2 assuming that you have heard of the stewardship of God's grace that was given to me for you, 3 how the mystery was made known to me by revelation, as I have written briefly. 4 When you read this, you can perceive my insight into the mystery of Christ, 5 which was not made known to the sons of men in other generations as it has now been revealed to his holy apostles and prophets by the Spirit. 6 This mystery is[a] that the Gentiles are fellow heirs, members of the same body, and partakers of the promise in Christ Jesus through the gospel.
Revelation 10:6-8 (ESV)
and swore by him who lives forever and ever, who created heaven and what is in it, the earth and what is in it, and the sea and what is in it, that there would be no more delay, 7 but that in the days of the trumpet call to be sounded by the seventh angel, the mystery of God would be fulfilled, just as he announced to his servants the prophets. 8 Then the voice that I had heard from heaven spoke to me again, saying, “Go, take the scroll that is open in the hand of the angel who is standing on the sea and on the land.”
Hebrews 9:8 (KJV)
The Holy Ghost this signifying, that the way into the holiest of all was not yet made manifest, while as the first tabernacle was yet standing:
Hebrews 9:8 (ESV)
By this the Holy Spirit indicates that the way into the holy places is not yet opened as long as the first section is still standing