No secret.
And who says "all others are lost?" Not any Calvinist. Heaven is now and will be filled with His saints, all according to His mercy, and not debt.
It is an exercise in establishing yourself as a sort of demi-God.
Who's the demi-god? Someone who imagines his own good works can saved him, or someone who knows that the only good work which saves anyone is Christ on the cross?
How about Esau?
You said: Who’s the demi-god?
Anybody who derives their beliefs from the man-made tradition called Sola Scriptura. Those individuals create a warped picture of God and Jesus Christ that is as much of a abomination before God as atheism is. As a matter of fact they practice Atheistic Christianity because they believe in a dead God.