The Christian meaning of life/Love for others

The aim of a Christian's life is to live in communion with God and with his brothers according to the new commandment of Jesus contained in the Gospel of John, but the commandment of love towards one's neighbor contained in the book of Leviticus remains and Jesus explains its meaning with the parable of the good Samaritan:

Leviticus 19:18 “ Do not seek revenge or bear a grudge against anyone among your people, but love your neighbor as yourself. I am the LORD. “

Luke 10:25-37 The Parable of the Good Samaritan 25 On one occasion an expert in the law stood up to test Jesus. “Teacher,” he asked, “what must I do to inherit eternal life?” 26 “What is written in the Law?” he replied. “How do you read it?” 27 He answered, “ ‘Love the Lord your God with all your heart and with all your soul and with all your strength and with all your mind’ ; and, ‘Love your neighbor as yourself.’ ” 28 “You have answered correctly,” Jesus replied. “Do this and you will live.” 29 But he wanted to justify himself, so he asked Jesus, “And who is my neighbor?” 30 In reply Jesus said: “A man was going down from Jerusalem to Jericho, when he was attacked by robbers. They stripped him of his clothes, beat him and went away, leaving him half dead. 31 A priest happened to be going down the same road, and when he saw the man, he passed by on the other side. 32 So too, a Levite, when he came to the place and saw him, passed by on the other side. 33 But a Samaritan, as he traveled, came where the man was; and when he saw him, he took pity on him. 34 He went to him and bandaged his wounds, pouring on oil and wine. Then he put the man on his own donkey, brought him to an inn and took care of him. 35 The next day he took out two denarii and gave them to the innkeeper. ‘Look after him,’ he said, ‘and when I return, I will reimburse you for any extra expense you may have.’ 36 “Which of these three do you think was a neighbor to the man who fell into the hands of robbers?” 37 The expert in the law replied, “The one who had mercy on him.” Jesus told him, “Go and do likewise.”