Mark 13:23 WEB

²¹  Then if anyone tells you, 'Look, here is the Christ!' or, 'Look, there!' don't believe it.

²²  For there will arise false christs and false prophets, 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,

²⁵  the stars will be falling from the sky, and the powers that are in the heavens will be shaken.