Prophecy

2 Peter 1:19-21

19And we have the word of the prophets made more certain, and you will do well to pay attention to it, as to a light shining in a dark place, until the day dawns and the morning star rises in your hearts. 20Above all, you must understand that no prophecy of Scripture came about by the prophet's own interpretation. 21For prophecy never had its origin in the will of man, but men spoke from God as they were carried along by the Holy Spirit.

The prophecies of the Bible are "a light shining in a dark place". They illuminate the hidden and deep things of God, that were written though the Holy Spirit. Then, ONLY the Holy Spirit can reveal the profound Truth of the Bible.

1Corinthians 2:7-10
6We do, however, speak a message of wisdom among the mature, but not the wisdom of this age or of the rulers of this age, who are coming to nothing. 7No, we speak of God's secret wisdom, a wisdom that has been hidden and that God destined for our glory before time began. 8None of the rulers of this age understood it, for if they had, they would not have crucified the Lord of glory. 9However, as it is written:
"No eye has seen,
no ear has heard,
no mind has conceived
what God has prepared for those who love him"— 10but God has revealed it to us by his Spirit.
The Spirit searches all things, even the deep things of God. 11For who among men knows the thoughts of a man except the man's spirit within him? In the same way no one knows the thoughts of God except the Spirit of God.