The Absurdity of Truth (Luke 6:20-49 (LD 43)

In our day and age we do not esteem truth.  This is not to say that our days are worse than other days in history, but philosophically there are those who do not believe we can understand truth.  In fact, people have appealed to history showing that the winner of a battle is the one who controls the narrative of the battle.  So, if this is true then what about the Bible?  What do we do with people having different understandings of the Word of God?  Is there truth and can we know truth?