Watch ye therefore: for ye know not when the master of the house cometh, at even, or at midnight, or at the cockcrowing, or in the morning:
Mark 13:33
Take ye heed, watch and pray: for ye know not when the time is.
Matthew 24:42
Watch therefore: for ye know not what hour your Lord doth come.
Matthew 24:44
Therefore be ye also ready: for in such an hour as ye think not the Son of man cometh.