The Surprise That Should Not Be
In the final days of His earthly ministry, Jesus had this to say about the final judgment:
"But of that day and hour no one knows, not even the angels of heaven, but My Father only. But as the days of Noah were, so also will the coming of the Son of Man be. For as in the days before the flood, they were eating and drinking, marrying and giving in marriage, until the day that Noah entered the ark, and did not know until the flood came and took them all away, so also will the coming of the Son of Man be" (Matt. 24:36-39).

Our Lord indicated that the global flood was a huge surprise for the world in Noah's era. The people of that day lived as they pleased (mostly in wickedness) and were oblivious to what God planned and preached through Noah. Sadly, there is a strong parallel to be made between the global flood and Judgment Day (i.e., the surprise that should not be). Note these points of similarity:

When Jesus returns it will be a big surprise for most, and--like the global flood--it won't be pleasant. However, this is a surprise that will not catch the faithful off guard. Let us watch and pray always, endeavoring to live righteously for Jesus until He comes (cf. Matt. 25:13).