This is very interesting. I was raised Jewish and was taught a bit of Hebrew and recall some confusion I had in Hebrew school. In Genesis, God doesn't actually say "I created Man in my image." The word "I" isn't used. The word used is the Hebrew word for "we."
It's plural. And yet perhaps THE key concept in Judaism is the oneness of God.
I brought this up in Hebrew school and the teacher wasn't happy.
Needless to say, I am not religious.