You say that the Rapture is a number specific event. By that, do you mean that when Jesus was crucified, God set a specific number of people to be allowed into the church?
I believe this number was established before the creation of Earth when our names were written in the Lamb’s Book of Life (Rev. 13:8). It was calculated by God looking forward to the end of time and seeing all who would choose the Lord as their savior. This is what Paul meant when he said, “Those He foreknew He predestined ” (Romans 8:28). It means that all this was agreed to before Adam’s Creation. 1 Peter 1:20 confirms this, saying that Jesus was chosen to die for us before the creation of the world.