Breanainn, I found some info. on the full meaning of "knowledge" in OT language:
Baker's Evangelical Dictionary
of Biblical Theology
Know, Knowledge
The Old Testament. The Hebrew root yada [[;d"y], translated "know"/"knowledge, " appears almost 950 times in the Hebrew Bible. It has a wider sweep than our English word "know, " including perceiving, learning, understanding, willing, performing, and experiencing. To know is not to be intellectually informed about some abstract principle, but to apprehend and experience reality. Knowledge is not the possession of information, but rather its exercise or actualization.
Thus, biblically to know God is not to know about him in an abstract and impersonal manner, but rather to enter into his saving actions (Micah 6:5). To know God is not to struggle philosophically with his eternal essence, but rather to recognize and accept his claims. It is not some mystical contemplation, but dutiful obedience.
In the doing of justice and righteousness, Josiah is said to have known God (Jer 22:15-16). True knowledge of God involves obeying the stipulations of his covenant. It is expressed in living conformity to his will. The opposite of knowledge is not ignorance, but rebellion (Jer 22:11-14).
Found at:
http://bible.crosswalk.com/Dictionaries/BakersEvangelicalDictionary/
This is a small part of what is there, but seemed the most relevant to the matter under discussion.
Blessings, Susana