I'm going with you on this one.
Scripture says if you don't believe Jesus rose from the dead then your faith is in vain.
1 Corinthians 15:14 KJV
(14) And if Christ be not risen, then is our preaching vain, and your faith is also vain.
You posted the above just over a year ago and may have come to a different understanding of that since then.
As it is, you were obviously reading your above into that passage.
Paul is actually asserting that if Christ did not rise from the dead, then he (Paul) had been preaching a vain, or baseless message.
And that if that had been the case, then their "faith is ALSO vain" (their having believed He rose from the dead was based on a message devoid [vain, empty] of any such Christ having risen from the dead).
Paul then goes into a defense of the opposite of that, in the balance of the chapter; which is about the validity of THEIR resurrection; being as it is based on the validity of Christ's Resurrection.
Just shows the importance of what I have tried to point out in vain (or, to no avail); that proper understanding of one thing or another in Scripture greatly depends on, and is greatly impacted by, one's study approach/study principles.