[Cronos]

I've never heard predestination as the source of salvation

Of course, if you believe the Calvinist argument, that is the conclusion -- Calvin would say that you were predestined to be saved.

[esquirette]

Romans 8:29

“For those God foreknew he also predestined to be conformed to the likeness of his Son, that he might be the firstborn among many brothers.”

I don’t think Calvin came up with predestination.

[xone]

Calvin would say that you were predestined to be saved.

Confessional Lutherans would say the same thing, Scripture is absolutely clear on that. Neither claim that predestination is the source of salvation. I'll go out on the limb speaking for the Calvinists here. It is a slam dunk.