Son of my mother
time of fear a friend
time of adversity a brother
time of laughter, a comrade
time of tears a comforter
you are a brother of mine
from Alpha to Omega.

Son of my Father
Strong arm, gentle word
Loves momentary glance
Reveals our brotherhood
I am my brother’s keeper
And he is mine
One root, One Father

Adrian Wait

http://www.poemhunter.com/poem/i-am-my-brother-s-keeper/