The Apostle Paul was mocking those who denied the general resurrection of the dead.
1 Corinthians 15:12-17, Now if Christ be preached that he rose from the dead,
how say some among you that there is no resurrection of the dead? But if there be no resurrection of the dead, then is Christ not risen:
And if Christ be not risen, then
is our preaching vain, and your faith
is also vain.
Yea, and we are found false witnesses of God; because we have testified of God that he raised up Christ: whom he raised not up, if so be that the dead rise not.
For if the dead rise not, then is not Christ raised: And if Christ be not raised, your faith
is vain; ye are yet in your sins. . . .
Romans 6:3, Know ye not, that so many of us as were baptized into Jesus Christ were baptized into his death?