Thanks, AG. Without trying to parse your statement too closely I'll only add that all men know the Father, Son, and Holy Ghost through nature, conscience, and providence to leave them without excuse. The fact that many suppress the truth only adds to their condemnation (Rom 1).
The heavens declare the glory of God; and the firmament sheweth his handywork. Day unto day uttereth speech, and night unto night sheweth knowledge. [There is] no speech nor language, [where] their voice is not heard. Psalms 19:1-3
My sheep hear my voice, and I know them, and they follow me: - John 10:27
And he said, Therefore said I unto you, that no man can come unto me, except it were given unto him of my Father. - John 6:65
Therefore speak I to them in parables: because they seeing see not; and hearing they hear not, neither do they understand. And in them is fulfilled the prophecy of Esaias, which saith, By hearing ye shall hear, and shall not understand; and seeing ye shall see, and shall not perceive: For this people's heart is waxed gross, and [their] ears are dull of hearing, and their eyes they have closed; lest at any time they should see with [their] eyes, and hear with [their] ears, and should understand with [their] heart, and should be converted, and I should heal them.
But blessed [are] your eyes, for they see: and your ears, for they hear. Matthew 13:13-16
Which things also we speak, not in the words which man's wisdom teacheth, but which the Holy Ghost teacheth; comparing spiritual things with spiritual.
But the natural man receiveth not the things of the Spirit of God: for they are foolishness unto him: neither can he know [them], because they are spiritually discerned. I Corinthians 2:11-14
But ye are not in the flesh, but in the Spirit, if so be that the Spirit of God dwell in you. Now if any man have not the Spirit of Christ, he is none of his. Romans 8:9