true , love thy neighbor as thy self is a commandment but I still think the meaning behind the good samaritan and the brothers being , hungry , naked and in prison is a different meaning to it, Like you quoted the ,anyone doing the will of the father is his brother sister and mother so it would stand to reason that the ones he consider special would be the center of the meaning . I think the good samaritan story was about ending the enmity the jews had against non jews .
TY...