Here's a question for you, it's not original to me, but something that I read or heard earlier today. How could the Son of God live among the people for thirty years and they didn't notice he was different? I think it has more to say about the humility and grace of God that he could do this than it does about the lack of perception on behalf of humanity.
Maybe people see what they want to see and the last thing they wanted to see, or expected to see, was God with calloused hands sweating over over the construction of some simple piece of furniture. After all, why should the one who spoke creation into existence reduce himself to working with hand tools?
But don't be fooled into thinking that God came in disguise rather like the Greek gods were supposed to do. The biblical story is that God didn't look human, he was human. He was neither pretending nor hiding, he was simply being God incarnate.
So, if he wandered down your street, you could be forgiven for thinking he was just another ordinary human being passing by. Nothing remarkable about him, nothing to draw your attention.
On the other hand, if you looked more closely and listened more carefully, you might just discover that you've been in the presence of God himself.