A.T. Robertson Commentary Mark 13:23

"But take ye heed: behold, I have told you all things beforehand." — Mark 13:23 (ASV)

But take ye heed (Hυμεις δε βλεπετε). Gullibility is no mark of a saint or of piety. Note emphatic position of you (υμεις). Credulity ranks no higher than scepticism. God gave us our wits for self-protection. Christ has warned us beforehand.