In the Twinkling of an Eye

So will it be with the resurrection of the dead. The body that is sown is perishable, it is raised imperishable; it is sown in dishonor, it is raised in glory; it is sown in weakness, it is raised in power; it is sown a natural body, it is raised a spiritual body.

Listen, I tell you a mystery: We will not all sleep, but we will all be changed – in a flash, in the twinkling of an eye, at the last trumpet. For the trumpet will sound, the dead will be raised imperishable, and we will be changed.

1 Corinthians 15: 42-44; 51-52.

How can I be assured this applies to me?

https://www.stevemcatee.com/abc-s-of-salvation