The Bible is a collection of 66 books of many types, including poetry, biography, romance, instruction and theology. And it was written over 1,500 years, by many types of authors: e.g. kings, generals, fishermen, prophets, scholars, a tax-collector and a doctor. But over-arching all this, the Bible is the true history of the universe, showing how God glorifies Himself all the way from Eternity Past to Eternity Future. And a central theme is Heilsgeschichte (German for "salvation history"): God’s eternal plan for His Son to take on human nature as the Last Adam (1 Corinthians 15:46). His death and resurrection would enable the salvation of those written in the Book of Life from the foundation of the world.
In Romans 4, Paul teaches the vital truth of justification by faith alone precisely because "Abram believed the LORD, and he credited it to him as righteousness" -- faith (Genesis 15:6), before he was circumcised -- a work (Genesis 17).
So it's not surprising that the Bible is full of historical information including timing. The great preacher Martyn Lloyd-Jones said:
Our Christian faith is based entirely upon history.... It is quite unique because it is teaching which is based upon history.... Our Christian faith is entirely different [to Buddhism, Hinduism, etc.]. It calls attention to facts ... the garden of Eden.... Do you remember the history of the flood? That is fact. That is history. Then God gave a new start.... Tower of Babel ... Abraham ... the facts about our Lord...
[Read the rest of the article at Creation.com.]