Original Verse:
1st John Chapter 2 Verse 19They went out from us but they were not of us; if they had been of us they would still be with us: but they went out from us so that it might be made clear that they were not of us.
Reference Verses:
1st John Chapter 1 Verse 3We give you word of all we have seen and everything which has come to our ears, so that you may be united with us; and we are united with the Father and with his Son Jesus Christ:
1st Corinthians Chapter 11 Verse 19For divisions are necessary among you, in order that those who have God's approval may be clearly seen among you.
Acts Chapter 20 Verse 30And from among yourselves will come men who will give wrong teaching, turning away the disciples after them.