I would never do this work in front of a group. Too dangerous for bystanders.
You can count on your deepest darkest secret and worst fear being shouted out at you to back you off.
Just know that God Lives us unconditionally, despite our sins.
8n fact, God tends to pick the biggest sinners for His most important work.
Moses, and Saul (Paul) were murderers. Peter denied Jesus and cut off the slave’s ear.....
15 And he (Jesus) said unto them, Go ye into all the world, and preach the gospel to every creature. 16 He that believeth and is baptized shall be saved; but he that believeth not shall be damned.
17 And these signs shall follow them that believe; In my name shall they cast out devils;
they shall speak with new tongues; 18 They shall take up serpents; and if they drink any deadly thing, it shall not hurt them; they shall lay hands on the sick, and they shall recover.
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Q: Are you actually practising exorcism? As in Roman Catholic exorcism?
I will only critique your theology here, for men like Moses, Paul and Peter were far from great sinners. The degree of iniquity of sinners and their judgment is based upon the degree of sin relative to the light and other aspects of grace given to them, and motive in cases where that applies. Peter was trying to defend the Lord He loved (and likely was aiming for the head). Moses killed a man who was abusing the people of God, and Paul in conscience toward God was punishing Christians (which is why he could say, "I have lived in all good conscience before God until this day:" Acts 23:1. "but I obtained mercy, because I did it ignorantly in unbelief." (1 Timothy 1:13)) In contrast to which is a man such as John Newton, who, having read the work of Christ-rejectors, not only did the same but tried to subvert the faith of others, and not in conscience toward God.
Yes you are so right.