Take ye heed, watch and pray: for ye know not when the time is.
Berean Study Bible (BSB) - Mark 13:33 >Be on your guard and stay alert! For you do not know when the appointed time will come.
Textus Receptus (TR) - Mark 13:33 >Βλέπετε, ἀγρυπνεῖτε καὶ προσεύχεσθε· οὐκ οἴδατε γὰρ πότε ὁ καιρός ἐστιν.