I don't understand how or why it is a 'limit' as opposed to 'an insight into his nature'.

Can god make a square circle?
Can he make 2+2=5 (not by changing the meaning of the conventional signs)
Can he make something both red all over and blue all over at the same time?

Why on earth would we expect him to be able to do any of that?

I understand the notion that we can't grasp everything with these tiny finite minds like ours...
But then I think that we also see parts clearly sometimes and god (if you like) gave us this wonderful tool of reason for a reason...

I don't see it as a limit on god.

I don't feel CONSTRAINED by not being able to do the impossible...

I think we can use reason to hit up upon the limits of what we are able to conceptualise
All that is left to be done then is to gesture at what lies beyond and to have faith

But I have trouble with the notion of God on the one hand and reason on the other