What are some Bible verses that will shut up a bible thumper?

everyday at work I have to listen to this guy preach to me and its not that I'm not a Christian, because I am. I'm just not into someone telling me that god speaks to him and he can see visions of the future and a bunch of other crap. Like one time he told the boss he was late for work because the lord turned off his alarm clock lol. Are there any bible passages I can refer him to about his preaching? I think that might be the best way to shut him up is just to refer him to scripture.