Jesus said, "By this everyone will know that you are my disciples, if you love one another." (John 13:35)
Most of the world has come to know the Good News because someone reached into their lives, in love, thus it was perpetuated in your life by someone walking in love.
Loving your neighbor is a vital core practice of followers of Jesus and of His church because it is the way the Kingdom is advanced. This is a foundational and pivotal work on which the rest of our life of faith finds its purpose and direction.
The word Jesus uses in the Great Commandment to love our neighbor is the Greek word plesion (pronounced play-seé-on) and appears in all four of the Gospels. To the Jewish people plesion referred to a member of the Hebrew nation, but to Jesus it was extended to include people of other nations and religions. It comes from the word pelas, which means 'near'. 'Neighbor' comes from Old English root words neah "near" and gebur "dweller". Neighbor therefor is the 'dear-dweller', plesion refers to the person who is near to us.
Jesus says that the Great Commandment is to love those near to us; our neighbors. That's why Paul wrote to the Galatians, "For the whole law can be summed up in this one command: ' Love your neighbor as yourself.'" (Galatians 5:14)
How are you demonstrating this pivotal key to advancing the Kingdom of God?