The Bible hints that God has a 7000-year plan for human development:
a) God sets a pattern in Genesis of 7 days - 6 days for creation and 1 day of rest.
b) The Millennium is referred to many times as the "rest" (Heb 4).
c) A day is like a 1000 years (Psalms 90:4, 2Peter 3:3-9).
d) Another clue is that Hosea 6:1-2 predicts that the restoration of the Jews would occur after 2 "days", which is poised to occur now after 2000 years.