It sure doesn’t take much to taint the water. 

Korihor gets caught in a lie. I’ve been reading today Alma 29, of the Book of Mormon. 

I wonder how often I believe a falsehood because it sounds easier, or more attractive than the truth? When the truth hurts, it is so much easier to believe a lie, even (or especially) one we only tell ourselves. At least it appears that way on the surface. The pain of the lie seems to come when you get caught out in it. “The emperor has no clothes!” 

“53 But behold, the devil hath deceived me; for he appeared unto me in the form of an angel, and said unto me: Go and reclaim this people, for they have all gone astray after an unknown God. And he said unto me: There is no God; yea, and he taught me that which I should say. And I have taught his words; and I taught them because they were pleasing unto the carnal mind; and I taught them, even until I had much success, insomuch that I verily believed that they were true; and for this cause I withstood the truth, even until I have brought this great curse upon me.”

https://www.lds.org/scriptures/bofm/alma/30?verse=53&lang=eng#p53