Mark 13:23 in the King James Version
But take ye heed: behold, I have foretold you all things.
Context
22 For false christs and false prophets will arise and will show signs and wonders, that they may lead astray, if possible, even the chosen ones.
23 But you watch. “Behold, I have told you all things beforehand.
24 But in those days, after that oppression, the sun will be darkened, the moon will not give its light,