No one knows exactly when this
will occur.
Mark 13:32
(Jesus began his discourse ... ) "But of that day or
hour,
no one knows, neither the angels in heaven, nor the
Son, but only the Father."
1 Thessalonians 5:2
For you yourselves know very well that the day of the
Lord will come like a thief at night.
2 Peter 3:10
But the day of the Lord will come like a thief, and then
the heavens will pass away with a mighty roar and the
elements will be dissolved by fire, and the earth and
everything done on it will be found out.