The Tribulation is the 70th week of the
prophecy of Daniel.

"Seventy weeks are determined upon thy
people and upon thy holy city, to finish
the transgression, and to make an end
of sins, and to make reconciliation for
iniquity, and to bring in everlasting
righteousness, and to seal up the vision
and prophecy, and to anoint the most
Holy." Daniel 9:24

Here are the goals God is determined to
fulfill in that 70-week time that will take
us to the completion of history.