“They went out from us, but they did not really belong to us. For if they had belonged to us, they would have remained with us; but their going showed that none of them belonged to us.”
1 John 2:19

John encourages Christians to have a deep sense of belonging with one another – along with a consistent sense of unity and support. This challenges us to consider the parameters that we remain.

Remain: a : to be a part not destroyed, taken, or used up
b: to stay in the same place or with the same person or group; especially : to stay behind