Mark 13:23

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

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.

But in those days, after that oppression, the sun will be darkened, the moon will not give its light,

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