Sometimes spiritual leaders must return to those in Christ to correct false teachings even as if to bring them once again to new birth in order to move them toward maturity in Christ.
To speak presumptuously in God's name is to (1) speak a "pretend" word from God, (2) speak a "former" or "other situation" word from God, or (3) speak a "possible" (I think God said it) word from God.
Christ-followers should strongly guard the mind and heart of each other - especially the young and ignorant - - - GUARD THEM FROM FALSE TEACHING AND TEACHING OF RELIGIONS.