First I am not a professional theologian. The following may contain factual errors. However, I am a mathematician and can formulate my thoughts exactly.

As far as I know, there is no free will for salvation of a man or woman accordingly the teaching of the Protestant reformer John Calvin.

I think we should accommodate that “free will” can be interpreted in different ways:

1. We have free will in that sense that God does not change our character by just moving atoms in our brain to erase our old mind and create a new one with destruction of our former mind. Instead God communicates with us with words, visions, etc., all of which are accomplished as influencing our brains with information contained in cosmic electromagnetic waves. Cosmic electromagnetic waves are called “Christ” in Bible (see my book). So God decided to save us through Christ instead of erasing our mind with brute force and starting it anew with old mind erases. In this sense we have free will.
2. Another meaning of “free will” is that we could be able to resist God’s influence to save us. I doubt whether we have free will in this sense. (Rom. 9:18-19) “18 So then, he has mercy on whom he desires, and he hardens whom he desires. 19 You will say then to me, “Why does he still find fault? For who withstands his will?” From this verse it seems that a human does not have free will in the sense to withstand the decision of God to save him.

It seems that all mainstream and evangelical Protestants believe that God has predestined who to save.

Another “feature” of Calvinism is that God has predestined also who not to save.

Do I agree with this? It seems that this question is even more difficult than it seems:

I suppose that people are born accordingly natural laws of biology and sociology. What is predestination for salvation of a particular person then? In my opinion it is “fitting” of a particular “natural” (stochastic that is randomly borb) person into the scheme of one of a big but finite number of a “new creations”.

Then the main point of the discussion of Luther and Calvin becomes: Does God predestine only fitting particular persons into the scheme of saved “new creations” or does He also predestine into another scheme of non-saved people? I don’t know the answer but suppose that it is likely that God in this sense predestined only “new creations” and has not predestined not saved people.

Another question: How can predestination fit together with the fact that people are saved when they willingly accept Christ into their hearts?

I think the main part of the answer to this question is: (Is. 65:24) “It shall happen that, before they call, I will answer…” This means that our prayers can be heard by God even before the world begin, when He does our predestination.