The word of God is both plain and also full of secrets. Man is only beginning to comprehend the secrets of God.
"Seek it like silver; search for it as for a treasure" (Proverbs 2:4).
Daniel 2:47 The king answered unto Daniel, and said, Of a truth it is, that your God is a God of gods, and a Lord of kings, and a revealer of secrets, seeing thou couldest reveal this secret.
When the testimonies of the two witnesses of the Law and the Prophets are silenced, there will be a "surprise" third witness to come forward. That would be the Kethuvim, which of course, includes the book of Daniel.
While the book of Daniel is generally a record of visions (Daniel being more or less the mystified passive observer), there are certain portions where Daniel himself prophecies. Notably, when he interprets the dreams/visions of the rulers of Babylon.
And that's a good one. After all, here was Daniel, famed for having the inside scoop on the wisdom of God, and was an interpreter of dreams ala Joseph, yet he was confounded at the visions. Now if Daniel was confused, who could understand this stuff?
Daniel 12
8. And I heard, but I did not understand; then I said, O my Lord, what shall be the end of these things:
9. And he said, Go your way, Daniel; for the words are closed up and sealed till the time of the end:
10. Many shall purify themselves, and make themselves white, and be refined; but the wicked shall do wickedly; and none of the wicked shall understand; but the wise shall understand:
If the Scripture itself states that certain understanding is hidden until a future date, who is man to say that there is nothing hidden in Scripture? It's not like that's the only example.
That all said, there is so much hocus-pocus in that which is claimed to be "Bible Codes", that the seekers are left with the same responsibility everyone else has - to read the Scripture for themselves to see if what the scholars say is true. Otherwise, how are they going to sort fact from fiction?
Absolutely. A wise friend said to me just this morning that
"His Truth is like an onion with almost infinite layers. All are the onion, all point to the Lord, yet we have to peel away the outer layers to get to the inner ones. Just like you said. Every bit of creation speaks of, teaches us, proclaims WHO God is, but it is He who opens our eyes."