Back when I was trying to get reinstated I tried and failed for 5 years to quit smoking. Prayed my fool butt off. I was trying to be a good boy - there was no reason why God should withhold holy spirit. Then one day I joined a smoking cessation class being offered by the local health department and they gave me a prescription for Chantix. I had my last cigarette about one week later.
Nevertheless, it always made me uncomfortable to give credit to the counseling or the Chantix.
"How did you finally quit, Zoos?"
"God's holy spirit, you know."
I'm not prepared to write off the possibility that God helps out in some way to help a person get on his feet spiritually, but stating that Their zeal for the Christian ministry gives powerful evidence [of] holy spirit is a pretty far fetched conclusion.