That's just it, no one can de convert someone.
However then can teach a doctrine of demon, by which those who give heed, can indeed depart from the faith.
The person the self must choose to depart from the faith, if they give heed to a doctrine of demons.
Now the Spirit expressly says that in latter times some will depart from the faith, giving heed to deceiving spirits and doctrines of demons, 1 Timothy 4:1
My prayer for you and all those on this Forum, is you continue steadfast in the faith, and are not moved away from the hope of the Gospel, so that at the end of your faith, you will receive the salvation of your soul.
JLB