The Conscience of a Man Tells him Good from Bad
The Holy Spirit who comes by way of Jesus’ name and by transference during prayers and the laying on of hands is how men receive supernatural gifts of The Spirit.
As it stands, all of mankind has a conscience except those who are sociopaths. Sociopaths have no hindering guilt or shame to deal with. They can murder without consequence to their mental or emotional condition. They are the best serial killers and the best hit men no doubt.