 You could have misunderstood your pastor. He may have been saying that the presence of the enemy, there can be oppressions. Christians can't be possessed. They can be oppressed, which means the enemy can be on him. And not to make you scared, but like weighing him down or making him lethargic or things like that. But he can't be in him. So there's nothing to cast out. There's a matter of scraping the barnacles off the boat and getting back in the game.