Why would we avoid, "For God, who said, "Let light shine out of darkness," made his light shine in our hearts to give us the light of the knowledge of the glory of God in the face of Christ."
It's not as if it says, "For God, who said, "Let light shine out of darkness onto his elect alone," made his light shine in his preselected elect one's hearts to irresistibly draw them to accept and follow the light of the knowledge of the glory of God in the face of Christ, but not any one else." The passage BobRyan quoted show this quite convincingly...he sent his light to "enlighten all men" so that "all might believe." Sorry, but the only thing here that supports your assertions are found in your own imaginations.
Not only that, but what is the light composed of? KNOWLEDGE. That is how God enlightens men, by TEACHING them (Jhn 6:45)
This verse is simply saying that God the Father was revealed to us by Jesus himself, in his person, his mighty works, and his teachings.
Mat 5:2 And he opened his mouth, and taught them, saying,
Mat 13:54 And when he was come into his own country, he taught them in their synagogue, insomuch that they were astonished, and said, Whence hath this man this wisdom, and these mighty works?
This verse is simply saying that Jesus Christ in his person and his teaching manifested the Father.
Jhn 8:19 Then said they unto him, Where is thy Father? Jesus answered, Ye neither know me, nor my Father: if ye had known me, ye should have known my Father also.
Jhn 14:7 If ye had known me, ye should have known my Father also: and from henceforth ye know him, and have seen him.
8 Philip saith unto him, Lord, shew us the Father, and it sufficeth us.
9 Jesus saith unto him, Have I been so long time with you, and yet hast thou not known me, Philip? he that hath seen me hath seen the Father; and how sayest thou then, Shew us the Father?
10 Believest thou not that I am in the Father, and the Father in me? the words that I speak unto you I speak not of myself: but the Father that dwelleth in me, he doeth the works.
11 Believe me that I am in the Father, and the Father in me: or else believe me for the very works' sake.
This is what 2 Cor 4:6 is speaking about, that God the Father was manifested and revealed through Jesus himself.
God does not supernaturally zap men to know these things. No, just the opposite is true, God became flesh and dwelt among men, God came down to our level and revealed himself in a manner men could see and understand.
This is what 2 Cor 4:6 is saying; that the light or knowledge of the Father was revealed by Jesus Christ in person when he became a man and dwelt among us.