See, I have told you beforehand.
Matthew 24:25
Surrounding context
24:24 For false christs and false prophets will rise and show great signs and wonders to deceive, if possible, even the elect.
24:25 See, I have told you beforehand.
24:26 "Therefore if they say to you, "Look, He is in the desert!' do not go out; or "Look, He is in the inner rooms!' do not believe it.