Now if Christ is proclaimed as raised from the dead, how can some of you say that there is no resurrection of the dead? But if there is no resurrection of the dead, then not even Christ has been raised.

(...)

But in fact Christ has been raised from the dead, the firstfruits of those who have fallen asleep.

"Behold, the days are coming, declares the LORD, when I will make a newcovenantwith the house of Israel and the house of Judah,

In the same way also he took the cup, after supper, saying, "This cup is the newcovenant in my blood. Do this, as often as you drink it, in remembrance of me."

In speaking of a new covenant, he makes the first one obsolete. And what is becoming obsolete and growing old is ready to vanish away.

This mystery is profound, and I am saying that it refers to Christ and the church.