If I am Satan, I would try to convince people they were Saved when they were not. If they think they are Saved, they will quit struggling so much.
Prosperity Gospel works good for that. Everything is measured by a worldly standard and Satan has considerable power in this world.
I fear false professions abound in our country. People walk an aisle, pray a prayer with the preacher, and then invite grandma to watch them when they go into the baptismal pool. And I am sure most mean it at the time. But soon they put Christ on the shelf, believing they have eternity in hand.
Danger, Will Robinson! Danger!
Those born of God persevere until the end. And the saved don’t use God like a lucky rabbit foot they pull out when they need something.
CS Lewis said much the same thing in Mere Christianity.