How do we know the command to love our neighbor is true?

The command to love one’s neighbor originates from Leviticus 19:18, where God instructs His people to love their neighbors as themselves. In the context of Matthew 5:43-48, Jesus affirms and expands upon this command, rejecting the partial quote of Scripture that limited neighborly love. He emphasizes that our understanding of 'neighbor' must extend beyond mere acquaintances or fellow countrymen to include everyone. The teaching that we are to love all people reflects the broader biblical principle of love that originates from God's nature. By embodying love as Christ demonstrated, believers manifest their obedience to this divine command. The authenticity of this command is solidified through Christ’s own example of love and mercy.