But see, there you go again. Yes, I agree with you that if there is a god, of any kind, it is absolutely possible for a person to have knowledge that such an entity exists. You claim to have that knowledge though but you are utterly incapable of presenting any means by which you came to that knowledge. You claim to know, you haven't shown that you have any way of actually knowing and that's what I keep challenging you on and you keep sidestepping the question.
It's like someone who says "I just know there are aliens!" Okay, how do they know? They have no answer for that, they "just know". No, they believe and have no clue what knowledge is. You can believe whatever you want, but once you start making claims of knowledge, as you do endlessly, people have every right to ask where your evidence is and how you came by that knowledge and we all know, you have none. You're just disguising blind faith as intellectual certainty when it's nothing of the sort.
For a purpose, God can make you certain of Him but at the same time making this "encounter" somehow unexplainable. He made it somehow unexplanable such that you will notice that it may not be proper to talk too much about your encounter. Aliens on the other hand, don't have such a motive. For example, Paul had more than on solid encounters with Jesus and angels. However, he claimed that he fought a good fight of faith. And he seldom talked about his experience of how he acquired his theological knowledge from Christ/God. And he only briefly mentioned about his experience in the third heaven.
Normally God brings you certainty but only to a point where your faith is still demanded. Even Abraham requires faith. The big picture is that humans need faith to be saved. That's why I actually disagree
Moreover, God bringing certainty to a person must serve a unique purpose. From my speculation, His certainty will only be brought to His witnesses with an effect that no matter what His witnesses said, others need faith to believe or to reject what is said. This is actually the whole purpose of His Holy Bible.
In a nutshell, His true witnesses seldom put their encounters into great details. However, if you have an encounter with God, you will at least notice a "protocol" of communication. The following verse will strike your mind while others may not be possibly notice its importance.
Moreover, before God grant you a message, He will make sure that you are able to identify Him (an invisible person) as God Himself. Not His every witness mentioned about this. But again, Paul sets a typical example, Jesus used a lightning to temporarily blind his eyes. It is actually a message for Paul (and most likely Paul only) to figure out (either right away or through out his life) that who was talking to him is a capable supernatural entity for Paul to rule out the possibility that what he encountered is other spirit than Christ/God Himself.
The verse:
Acts 14:3
So Paul and Barnabas spent considerable time there, speaking boldly for the Lord,
who confirmed the message of his grace by enabling them to perform signs and wonders.
In a nutshell, this is what I call a time trick for the conveying of unambiguous messages. A prophecy (which is related to a message) can serve the same purpose.
So in a close encounter with God, you will see the following,
1) God will identify Him as God to you (and possibly only you). A supernatural event can be involved for this
2) The certainty will qualify you as a witness of Him. It is thus necessary for a protocol of communication to be learned by you, such that unambiguous messages can be delivered.
After all, your faith will still be preserved to a certain extent. Actually I speculate that the above is so such that your faith will not be completely destroyed.