1 Corinthians 15:14

And if Christ be not risen,.... If this is a truth, and must be taken as granted, as it must be, if there is no resurrection at all:

then is our preaching vain; false, empty, delusory, unprofitable,…

And if Christ is not risen, then is our preaching vain - Another consequence which must follow if it be held that there was no resurrection, and consequently that Christ was not risen. it would be…

Then is our preaching vain - Our whole doctrine is useless, nugatory and false.

And your faith is also vain - Your belief of a false doctrine must necessarily be to you unprofitable.

Having confirmed the truth of our Saviour's resurrection, the apostle goes on to refute those among the Corinthians who said there would be none: If Christ be preached that he rose from the dead, how…

vain i.e. useless, in vain, as we say. Literally, empty. Vulg. inanis. "You have a vaine faith if you believe in a dead man. He might be true man, though He remained in death. But it concerns you to…