A few days before His crucifixion Jesus told His disciples to keep watch for His return...
"Therefore, KEEP WATCH, because you do not know on what DAY your Lord will come. But understand this: If the owner of the house had known at what time of night the thief was coming, he would have kept watch and would not have let his house be broken into. So you also must be ready, because the Son of Man will come at an HOUR when you do not expect him." (Matthew 24:32-44)
The Bible says that a day with the Lord is like a thousand years.
"A thousand years in your sight are like a day that has just gone by, or like a watch in the night." (Psalm 90:4)
"But do not forget this one thing, dear friends: With the Lord a day is like a thousand years, and a thousand years are like a day." (2 Peter 3:8)
Maybe God has given humanity dominion over the earth for a period of six thousand years, a thousand years for each day of creation. There is some evidence of such in the Bible and I found it by studying the chronological passages in the Masoretic text of the Old Testament. It showed me that from the creation of Adam to the birth of Christ Jesus there has been 3,965 years, as follows:
Creation of Adam to the world wide flood: 1656 years (Genesis 5:3-32; 7:6, 11; 11:10)
Flood to birth of Terah, Abraham's father 427 years (Genesis 11:10-32; Acts 7:4)
Terah's age when Abraham entered Canaan 205 years (Genesis 11:32)
Length of time Israel stayed in Canaan and Egypt 430 years (Exodus 12:40-41; Galatians 3:17)
Exodus from Egypt to start of Temple 480 years (1 Kings 6:1)
Reign of kings of Judah to Babylonian captivity 419 years (1 Kings 6:1through 2 Kings 24:8)
Years in captivity 70 years (Jeremiah 25:11)
End of captivity to birth of Jesus. 483 years (Daniel 9:24-25)
TOTAL years from creation of Adam to birth of Jesus: 3,965 years
So, from the birth of Jesus to His return would be 2,035 years for His return to be the 6,000th year from the creation of Adam. So will Jesus return in 2035 AD? Maybe
Note that this 6,000 year theory makes it possible to figure the exact YEAR of His return, but not the exact HOUR or DAY which Jesus said no one knows except the Father.
Whether He returns in 2035 AD or not, I will continue to wait, count, and watch for His return!
"At that time they will see the Son of Man coming in a cloud with power and great glory. When these things begin to take place, stand up and lift up your heads, because your redemption is drawing near...Be always on the watch, and pray that you may be able to escape all that is about to happen, and that you may be able to stand before the Son of Man.” (Luke 21:27-28; 36)