What about the parable of the Good Samaritan? If I recall correctly, Christ told that in response to the question "Who is my brother?" In any case, that would show the brotherhood of man.
Oh! I forgot. The Gospels, and Christ's preaching, is not important to you.
"Who is my neighbor?" actually. That's what makes it an even more wonderful parable than first appears, IMHO. "Neighbor" is a relationship the 'perfection' of which is up to us. We 'perfect' it by showing mercy.
(Can you tell that 'perfection' and perfect as a verb are my new toys?)
God is not the Father of all men ... We need to be adopted by Him to have Him as our Father
BTW that idea is straight from the Masons it is often carved in the stonework of Masonic temples