Therefore, as for you, let that remain in you which you heard from the beginning. If that which you heard from the beginning remains in you, you also will remain in the Son, and in the Father.
They went out from us, [some of them had even become a part of the fellowship of the church for a time,] but they were not of us; for had they been of us, they would no doubt have continued with us: but they went out, that they might be made manifest that they were not all of us ( 1 John 2:19 ).