“Love your neighbor as yourself.”

And behold, a certain lawyer stood up and tested Him, saying, “Teacher, what shall I do to inherit eternal life?” He said to him, “What is written in the law? What is your reading of it?” So he answered and said, “ ‘You shall love the  Lord  your God with all your heart, with all your soul, with all your strength, and with all your mind,’ and ‘your neighbor as yourself.’ ” And He said to him, “You have answered rightly; do this and  you will live.” But he, wanting to justify himself, said to Jesus, “And who is my neighbor?” Then Jesus answered and said: “A certain man went down from Jerusalem to Jericho, and fell among  thieves, who stripped him of his clothing, wounded him, and departed, leaving him half dead. Now by chance a certain priest came down that road. And when he saw him,  he passed by on the other side. Likewise a Levite, when he arrived at the place, came and looked, and passed by on the other side. But a certain  Samaritan, as he journeyed, came where he was. And when he saw him, he had  compassion. So he went to him and bandaged his wounds, pouring on oil and wine; and he set him on his own animal, brought him to an inn, and took care of him. On the next day,  when he departed, he took out two  denarii, gave them to the innkeeper, and said to him, ‘Take care of him; and whatever more you spend, when I come again, I will repay you.’ So which of these three do you think was neighbor to him who fell among the thieves?” And he said, “He who showed mercy on him.” Then Jesus said to him, “Go and do likewise.”
Luke 10:25-37 - NKJV