One can very well hear God's voice through Scripture just fine without the AHA, but you will never understand Scripture as it actually is if you think the meaning you see in it is "in there." Meaning is not "in" a text. Meaning is a function of the way words are used by readers. The meaning of the Bible is not in the Bible. It is in the reader of the Bible.
If the reader of the Bible reads the words with the assumptions of common Christian faith, they will read it as Scripture. They will read it Christianly. If a person reads it with their denominational assumptions, they will read it and see the teachings of their denominations. And if one reads it in terms of the assumptions of the original contexts of each text, then one will read in it in terms of what it actually and originally meant.