Another text that illustrates how early Christianity dealt with dissenters (apostates? grin) are the letters of Ignatius.
If you've heard little about this early Christian, here's a brief bio:
His life dates are not quite clear, and could be in a range of CE 35 to 50 for a birthdate and a death date between CE 98 to 117, which puts him in a position to have been a young man as the Apostolic age came to a close. Church tradition claims that John ( the Apostle) personally studied with him and that he (Ignatius) became the third bishop of Antioch. It's reasonably certain that he died a martyr's death in Rome.
as illustrated by a church artist around 1000CE.
So now you know a little about the man, what did he say that reflects on the treatment of backsliders?
Two things:
First, believers must stick close to the congregation. In his letter to the Ephesians (Ch5 vs 2), he argues:
"Make no mistake about it. If anyone is not inside the sanctuary, he lacks God's bread (i.e. spiritual food)".
Vs 3 continues:
"He who fails to join in your worship shows his arrogance by the very fact of becoming a schismatic ( apostate, grin) ... Let us, then, heartily avoid resisting the bishop so that we may be subject to god."
and in 6:1:
"It is clear, then, that we should regard the bishop as the Lord himself."
The second point is made in his letter to the Smyrneans, part of the same series of letters that he wrote while on the journer to Rome, where he was looking forward to being eaten by wild beasts.
In ch.6, vs 1 Ignatius discusses a current apostacy, and then advises (vs.2)
"The right thing to do then is to avoid such people and to talk about them neither in private nor in public."
That's not very different to the actions of our ever-loving, former brothers and sisters, is it?
Which is why I keep saying that its not just the JWs that are the problem, its the whole deal of Christianity, which is riddled with exclusivity.
What the world needs is inclusivity, not exclusivity.