This would eliminate the possibility of there being no God then, in which case the existence of God is certain.
And if the existence of God is certain, then one does not need to be in God to know, rendering your argument flawed beyond recovery.
I find this a quite eloquent use of nervous tension, admittedly circular.
Allow me to demonstrate that you do not retain the point, by the Grace of God.
Certainty is not knowledge.
Certainty is defined by a position within the truth, the knowledge of which (truth) is given by the Peace of God (a balance between pleasure and pain).
If you do not know your position, you cannot be certain. If you cannot be certain you cannot have Peace. If you cannot have Peace you cannot have the Peace of God. If you cannot have the Peace of God, you cannot have the Knowledge of God, since you are not
in God or God would give you either. Ergo you have a choice to be in God that would give you certainty, whether or not you had knowledge, given time (which you may exchange for Peace, being sufficiently calm). Therefore if you take God as certainty, and assume it is also knowledge, without exercising your Choice for further Peace or Knowledge, you either want Peace but can't keep it for lack of knowledge or you want knowledge without certainty, since the position you have taken on the Choice that would grant it to you, is that the Certainty which Knowledge should have given you, is now in the Knowledge you continue to want (without position, because you deny God). EDIT: I admit this is dense, but I have made the argument as literal as possible in the event that you do not accept that Certainty is not Knowledge on the basis of common sense (common sense which obviates the need for complicated explanations. Read on! I make it simpler.)
You cannot have position, and deny God.
Also, just because you keep wanting Certainty when you think of Knowledge, does not make the Certainty of knowing God in God, knowledge that is equivalent with Certainty.
If it were true that you could have certainty every time you had knowledge, you would always know your name and never anybody else's.
Ergo Certainty is not knowledge and your argument is false. That is not a problem if you can forget about it.
I forgive.