Mark 13:32
But of that day and that hour knoweth no man, no, not the angels which are in heaven, neither the Son, but the Father.
Cross-references
Mark 13:26 describes the Son of Man's coming; 13:32 adds that the exact time is unknown even to the Son — a key contextual detail.
Mark 13:27 depicts the gathering of the elect after the coming; 13:32 clarifies that the timing of that event is hidden.
Matthew 24:36-42 contains the parallel statement that no one knows the day or hour, expanding with the Noah analogy — a direct Synoptic parallel.
Matthew 25:13 directly commands watchfulness because you do not know the day or hour — identical teaching to Mark 13:32.
Acts 1:7 says it is not for you to know the times or dates — same forbidden knowledge as Mark 13:32.
1 Thessalonians 5:2 says the day of the Lord comes like a thief — unexpected arrival parallels the unknown day/hour.
2 Peter 3:10 says the day of the Lord will come like a thief — same thief metaphor for unexpected coming.
Revelation 3:3 warns Jesus will come like a thief and you will not know the time — explicit parallel to Mark 13:32.
Zechariah 14:7 says that unique day is known only to the Lord—directly echoing that no one knows the day except the Father.