And Who Is My Neighbor?

Luke 10:27-29 And he answering said, Thou shalt love the Lord thy God with all thy heart, and with all thy soul, and with all thy strength, and with all thy mind; and thy neighbour as thyself.

28 And he said unto him, Thou hast answered right: this do, and thou shalt live.

29 But he, willing to justify himself, said unto Jesus, And who is my neighbour?