The Day of the Lord comes as a thief in the night (II Peter 3:10)
The Flood in the Day of Noah came as a thief in the night
(Matthew 24:36-44)
The Day of the Lord includes ALL the events of the tribulation
period as eyewitnessed by the apostle John (Revelation 1:9-11), which increase in intensity as do the birth pangs of a woman
ALL believers are of the Day and will NOT be around for
the tribulation night and, therefore, as children of the Light should be alert for opportunities to share that
Light with those in darkness (Ephesians 5:14-17 cf.Colossians 4:5-6)