If they had been of us, they would have continued with us.
1 John 2:19
If we truly belong to the church, we are held by a power beyond our capability. There will be people who come to church and fellowship outwardly with deceptive motives. Never count it as a tragedy when people turn away. When we trust that God builds the church we must accept the process and placement of bricks. There is a great blessing when opposing factions leave the church, because “those who are genuine among [us] may be recognized” (1 Cor. 11:19). People who are committed to us, continue with us.
Pray to recognize genuine fellowship.