But in the meantime, here is a wonderful quote from John Frame:
Sometimes in the Scriptures, "knowing" a person refers mainly to knowing facts about him, but most often it means being involved with him either as a friend or as an enemy . . . . When Scripture speaks of God "knowing" men, generally the reference is not to factual knowledge at all (since it goes without saying that God knows the facts). In such contexts, knowing generally means "loving" or "befriending" . . . .
Man's knowledge of God, then, is very similar to God's knowledge of man. To know Him is to be involved with Him as a friend or as an enemy. For the believer, to know Him is to love Him--hence the strong emphasis on obedience (as we have seen) as a constitutive aspect of the knowledge of God. Here, however, we wish to focus on the fact that the God whom we know and whom we love is of necessity present with us, and therefore our relationship with Him is a truly personal one. The intimacy of love assumes the present reality of the beloved.