for all flesh had corrupted their way on the Earth.’
(Genesis 6:12)
Similarly, though they will not be present among mankind during the final millennium (the Millennial Reign of Christ, which will be the 5th age of human history), but will be locked away in the bottomless pit for 1,000 years, you can bet devils will likely be scheming, knowing they will be released once again to taunt mortal humans! How do they know this? They read The Book, as you should, too!
While mankind was corrupting themselves during the first millennium, ‘Enoch walked and communed with God for three hundred years...’ (Genesis 5:22) This is evidence that, even during God’s ‘Day of Rest’, the door to communion with Him was still open to any person who would seek Him.
Similarly, perhaps during the final millennium, mortals (who will have survived the tribulation, along with their offspring) will yet commune with Christ. Indeed, at that time, mortal Jews will reportedly embrace Him as their Messiah. It is unclear whether this might infer 'salvation' as we currently know it. It is clear, however, that Jews who strive the great tribulation will be sporting the 'mark of the beast', and therefore, will not be eligible for salvation, per Revelation 14. Moreover, whether their offspring born during this age will experience salvation is doubtful, at least salvation as we currently know it, yet all things are possible. (See: Salvation in the Millennium (Series))
Devils Scheming, Yet...
Door to ‘Communion’ Still Open
Pic sources:
http://www.clker.com/clipart-15089.html
http://www.tellout.com/revelation/now20.htm