Are you capable of doubting the trininty?
I’m capable of doubting anything, and willing to change my view provided the evidence is consistent and reasonable. Your cherry-picking verses to back up your view, while ignoring the numerous ones that contradict it, doesn’t meet the standard.
For instance, what do you do with John 1:1?
Then there’s the matter of Jesus claiming to be God in front of the Pharisees; which, incidentally, is precisely why they were eager to stone him. So Jesus misspoke? I give him more credit than that.
And the fuller context of 1 Corinthians 13:11 doesn’t do anything to change its application to your erroneous and unscriptural view that a child should be able to fully understand God. As an example of mischaracterizing something, your citation in no way challenges my point. If you look at the text again, note that it references our understanding God’s will, not his nature.