I have three brothers, two are older than me and 1 younger. It has always been a issue for me to think about as the older tow did not want to listen to the younger brother and the younger one never listened. Not that I was any different. But yes I am my brothers keeper. I need to share God's love and law with all of brothers. But it does not stop with my biological brothers. It goes for all of my brothers and sisters in Christ.