I think these verses clearly teach that knowledge does not come by natural created means:
Jhn 6:45 It is written in the prophets, And they shall be all taught of God. Every man therefore that hath heard, and hath learned of the Father, cometh unto me. Jhn 6:46 Not that any man hath seen the Father, save he which is of God, he hath seen the Father.
Psalm 119: 99 I have more insight than all my teachers, For Your testimonies are my meditation. 100 I understand more than the aged, Because I have observed Your precepts.
Mat 11: 25 At that time Jesus said, “I praise You, Father, Lord of heaven and earth, that You have hidden these things from the wise and intelligent and have revealed them to infants.
1 Cor 1:21 For since in the wisdom of God the world through its wisdom did not come to know God, God was well-pleased through the foolishness of the message preached to save those who believe.
1 Cor 1: 25 Because the foolishness of God is wiser than men, and the weakness of God is stronger than men. 26 For consider your calling, brethren, that there were not many wise according to the flesh, not many mighty, not many noble; 27 but God has chosen the foolish things of the world to shame the wise, and God has chosen the weak things of the world to shame the things which are strong, 28 and the base things of the world and the despised God has chosen, the things that are not, so that He may nullify the things that are, 29 so that no man may boast before God.
Ecc 8: 17 and I saw every work of God, I concluded that man cannot discover the work which has been done under the sun. Even though man should seek laboriously, he will not discover; and though the wise man should say, “I know,” he cannot discover.
1 Cor 2: 9 but just as it is written,“THINGS WHICH EYE HAS NOT SEEN AND EAR HAS NOT HEARD, AND which HAVE NOT ENTERED THE HEART OF MAN, ALL THAT GOD HAS PREPARED FOR THOSE WHO LOVE HIM.”
Not to mention that infant salvation is impossible without immediate saving knowledge