Ex nobis prodierunt, sed non erant ex nobis, nam, si fuissent ex nobis, permansissent utique nobiscum: sed ut manifesti sint quoniam non sunt omnes ex nobis.
They went out from us but they were not of us. For if they had been of us, they would no doubt have remained with us: but that they may be manifest, that they are not all of us.
Ex nos prode, sed non es ex nos, nam, si es ex nos, permane utique nobiscum: sed ut manifesto es quia non es omni ex nos.