50 the lord of that servant will come in a day when he doth not expect him, and in an hour which he knows not,
Matthew 24:50 Cross References - Worsley
Matthew 24:42-44
42 Watch therefore, for ye know not at what hour your Lord cometh:
43 but this ye know, that if the master of the house had known at what hour the thief would come, he would have watched, and would not have suffered his house to be broke open: therefore be ye also ready;
44 for the Son of man cometh at a time that ye think not of.
1 Thessalonians 5:2-3
Revelation 3:3
3 Remember therefore how thou hast received and heard, and hold fast, and repent: for if thou be not watchful, I will come upon thee as a thief, and thou shalt not know at what hour I will come upon thee.