Good day, Pilgrim,

(1) Your answer to my question (#2) is a cloud covering the true reason. The true and ultimate reason why for some the call is not effectual is because “before the foundation of the world…chosen from the whole human race…a certain number of persons to redemption in Christ…”; that in "the decree of God...some men ...(are) foreordained to everlasting death."

To those chosen, the call is effectual because they are chosen. They are made “capable of hearing and repenting” because they are chosen.

Conversely, the call is not effectual for others because they are not chosen and for that ultimate reason God does not give them the capability to hear and repent. It may true that their inability to hear and repent is due to their own sin, and it may be true that because of their own sin they are deserving of damnation, but is it is precisely and only because they are not chosen that the call to salvation is not effectual; that is the true and ultimate reason.

For all intents and purposes, any other reasons underlying proposed are moot.

(2) Acts 13:48 – Did you get all that out of this one verse? In any case, it seems the deciding factor rests on the word “ordained.” the few references I’ve read do not seem to (e.g. Robertson Word Pictures) support the way you view the text. As such, your interpretation of the text is doubtful.

For my unscholarly self, I noticed:
(a) It doesn’t read, “pre-appointed” (NJKV) or “fore-ordained” (KJV).
(b) Your application of “ordain” in interpreting the text here is not used in the same way as in the other verses where the same Greek word occurs.
(c) Those who are appointed to eternal life are those who respond in faith to the message.

What I sense being conveyed by the verse is that God appoints believers for salvation; as many as believe, even so, they are “appointed to eternal like.”

Acts 18:19-20?

(3) To say ‘biblical Calvinism” is an oxymoron and why one would evangelize is not relevant to this issue.