Letters of Ignatius 50

1Therefore shun those vile offshoots that produce deadly fruit. If anyone tastes it, that person dies at once. For these people are not the Father’s planting:

2for if they had been, they would have been seen to be branches of the Cross, and their fruit imperishable—the Cross by which He, through His passion, invites us, being His members. Now a head cannot be found without members, since God promises union, and this union is Himself.