The following was written by John, the Disciple, the Apostle, and the Revelator, to the whole church:
If someone says, “I love God,” but hates a fellow believer, that person is a liar; for if we don’t love people we can see, how can we love God, whom we cannot see? 21 And he has given us this command: Those who love God must also love their fellow believers.(1 John 4:20, 21)
5 I am writing to remind you, dear friends, that we should love one another. This is not a new commandment, but one we have had from the beginning. Love means doing what God has commanded us, and He has commanded us to love one another, just as you heard from the beginning. (2 John:5,6)
This was written by Jude, the half-brother of Jesus, to the church at large:
But you, dear friends, must build each other up in your most holy faith (Jude 1:20)
This was written by the Apostle Paul to the church in Ephesus:
You are members of God’s family. (Ephesians 2:19)
Always be humble and gentle. Be patient with each other, making allowance for each other’s faults because of your love. Make every effort to keep yourselves united in the Spirit, binding yourselves together with peace.(Ephesians 4:2,3)