1. There are true propositions. (Premise)
2. Every true proposition is part of a maximally alethic state of affairs A. (Premise)
3. The contents of A are possibly known by a mind. (Premise)
4. Hence, an omniscient mind possibly exists. (implied by 1 - 3)
5. A possibly existent omniscient mind either has necessary or contingent existence. (Premise)
6. An omniscient mind cannot exist contingently. (Premise)
7. Therefore, a necessary and omniscient mind exists. (From 4 - 6)
I currently accept (6) solely on intuition. I'm sure some argument can be forged for its plausibility, but I wonder if such an argument would be persuasive and (more importantly) sound.