He invoked the power name of Jesus Christ many times. That is all anyone needs.
Critical spirits are not from God
It is far worse more than a critical spirit if you know of the claims of the poster.
What you said is exactly what Jesus warned about.
“He invoked the power name of Jesus Christ many times. That is all anyone needs.”
Matthew 7:
True and False Disciples
21 “Not everyone who says to me, ‘Lord, Lord,’ will enter the kingdom of heaven, but only the one who does the will of my Father who is in heaven.
22 Many will say to me on that day, ‘Lord, Lord, did we not prophesy in your name and in your name drive out demons and in your name perform many miracles?’
23 Then I will tell them plainly, ‘I never knew you. Away from me, you evildoers!’