One reason this location is of great interest is that Mitanni is mentioned in the Bible’s book of Judges. In standard dating, the Mitanni kingdom ruled the northern Tigris-Euphrates region from before 1600 BC until about 1350 BC when it was overtaken by the Assyrian Empire. It became a weakened province of Assyria for about a century before fading from the historical record.
Mitanni’s history makes a strong argument against a late Exodus date (also known as the Rameses Exodus date) in the 1200s BC since there is good evidence that Othniel, one of Israel’s first judges, was fighting against a Mitanni invasion in Judges 3. A Rameses Exodus date would put the judge Othniel in the 1100s BC and about two centuries after Mitanni ceased to be a strong kingdom, thus showing that the Exodus must have been much earlier.
The following video produced by Creation Ministries is helpful in understanding the Bible and the archaeological discoveries that support Biblical events and dates. Can I suggest you go to http://www.creation.com and search “Bible and archaeology” where you will find that many archaeologists have found the Bible to be an accurate historical document.
Were the Bible’s stories made up long after the fact, or do the accounts preserve eyewitness testimony? See how archaeology supports the Bible.