Actually no. It is God that takes, makes and plants believers in the Body of Christ. It is He that saves, perseveres and preserves them. He has taken them from the dead from every tongue, tribe and nation for His own purposes and given them Faith.
It is not up to man and your salvation is not defined by what earthly church you attend, but by His work and Faith which He has planted in folks like us.
If Salvation is determined by man, man can undo it just that fast and upon a whim. No one would be saved. But thank God, Salvation is by God just as Jonah said "Salvation is of the Lord" - not man.
But what about all those discussions by Paul of how Christians should be of one mind and expel from their midst those advocating false doctrines?
If Christians are to implement these scriptural instructions, they can’t be believing a whole bunch of different things.
All denominations can be wrong, but they most certainly can’t all be right.