In Context

20 and if the Lord did not shorten the days, no flesh had been saved; but because of the chosen, whom He did choose to Himself, He did shorten the days.

21 And then, if any may say to you, Lo, here is the Christ, or, Lo, there, ye may not believe;

22 for there shall rise false Christs and false prophets, and they shall give signs and wonders, to seduce, if possible, also the chosen;

23 and ye, take heed; lo, I have foretold you all things.

24 'But in those days, after that tribulation, the sun shall be darkened, and the moon shall not give her light,

25 and the stars of the heaven shall be falling, and the powers that are in the heavens shall be shaken.

Mark 13:23 in Other Translations