So then, we should do the right thing toward every person whenever we have the opportunity, and especially toward people who are part of God’s family [i.e., those making up “the faith”].
And this is the [greatest] commandment [See Matt. 2:37-38] we have received from Him: [It requires] that the person who [claims to] love God should also love his brother.
Here is how we can know what [God’s] genuine love really is: It was [demonstrated by] Jesus laying down His life [on the cross] for us. And [because of that] we [too] should [be willing to] lay down our lives for [the sake of helping] our brothers [and sisters].
[For] we [can] know that we have passed out of [the realm of spiritual] death and into [spiritual] life, because we [show] love for the brothers [and sisters]. The person who does not love [them] continues to be [spiritually] dead.
[Since] you have purified your souls by [your] obedience to the truth [i.e., the Gospel message], which produces a genuine love for your brothers, [now] you should have this kind of fervent, heartfelt love for one another.
Now to summarize: All of you should think alike. Be sympathetically understanding [toward one another]. Be loving toward [your] brothers [and sisters]. Be tender-hearted and humble-minded.
Make sure that no one does anything wrong [back] to someone who wrongs him, but always look for something good you can do for one another and for everyone.