John 13:34-35 (AMP)
I give you a new commandment: that you should love one another. Just as I have loved you, so you too should love one another. 35 By this shall all [men] know that you are My disciples, if you love one another [if you keep on showing love among yourselves].
I THEREFORE, the prisoner for the Lord, appeal to and beg you to walk (lead a life) worthy of the [divine] calling to which you have been called [with behavior that is a credit to the summons to God’s service, Living as becomes you] with complete lowliness of mind (humility) and meekness (unselfishness, gentleness, mildness), with patience, bearing with one another and making allowances because you love one another. Be eager and strive earnestly to guard and keep the harmony and oneness of [and produced by] the Spirit in the binding power of peace.
Ephesians 4:1-3 (AMPC)