In the 19th century denominational discord was much more common than it is today:
My revered ggg grandfather, probably ordained by Francis Asbury, over his lifetime went through the South establishing Methodist churches. He always gave away whatever money he might acquire.
Ca 1860 he was 86; his numerous children had all pushed on to greener pastures. His cousin Nelson, an Episcopalian, had been much more provident than the preacher and had acquired large holdings of land. He felt led to provide a house and "life style" for Old Cousin James and his wife, Salley.
The old couple spent their declining years there, during which O.C.J. never failed to take Nelson and family to task for their Episcopalianism and to threaten them with hellfire and brimstone.
In the 2nd century there were two strong churches in 'Ephesus' (or wherever this happened). Like present day Quakers the Thomasines held "that of God in everyone": through the Eternal Light that shines upon us all and the divine and merciful word from the Source we may all become brothers or sisters of Jesus.
John, the founder and father of the other church, had a different idea. He implied that Jesus was present with the Father before the creation of the world. Furthermore Jesus was the only (begotten) One, and there was no other way.
How could John combat the insidious heretical propaganda of the Thomasine Christians. Well John would just say a few things about Thomas. In case you haven't read John for yourself, Elaine Pagels of Beyond Belief tells us what they were.
Check John 11:16; also John 14:5; and John 20:27.