Jesus said we must love our neighbor as ourselves. Then he gives a parable about the good Samaritan. I take this to mean that your neighbor is everybody.
We should always do our best to treat others properly: “...whatever you want others to do for you, do also the same for them, for this is the Law and the Prophets” (Matthew 7:12, CSB); “Let your light shine before men in such a way that they may see your good works, and glorify your Father who is in heaven” (Matthew 5:16, NASB); “...maintain good conduct among the non-Christians, so that though they now malign you as wrongdoers, they may see your good deeds and glorify God when he appears” (1st Peter 2:12, NET).
But the neighbours we must love as ourselves
in particular are our brothers and sisters in Christ. “Love your neighbor as yourself” is a quote from Leviticus 19:18. The laws in this immediate passage explain how God’s chosen people are to treat
one another.
This truth in context then follows through into the true Church. In each local assembly believers in Christ are to lovingly treat one another fairly and graciously.
Leviticus 19:18 is quoted in Romans 13:9 where Paul is telling believers to do “no wrong” to one another. In Galatians 5, where the Leviticus text is also quoted, God’s people are told to lovingly serve one another rather than be at one another’s throats.
Finally, in James 2 proper impartial conduct
in church gatherings is enforced by quoting Leviticus 19:18. The believers are told not to make “distinctions among” themselves, “and become judges with evil motives” (v. 4).
How believers treat and love one another is really where the tyre touches the road. We’re not too good at it! We allow our own feelings to get in the way, especially when we are wronged.
Jesus said: “A new commandment I give to you, that you love one another, even as I have loved you, that you also love one another. By this all men will know that you are My disciples, if you have love for one another” (John 13:34, 35, NASB).