Is Bible teaching absolute or relative truth?

In our post-modern world many “truths” are considered relative  truths.  eg: You have your truth about what happens after death and I have a different truth about life after death.  You are invited to hear how the Bible is not a relative truth, but an absolute truth like gravity and electricity.  The Bible is a unique book written by the God of the universe and it provides many proofs of it being an absolute truth.  There are so many fulfilled Bible prophecies that show that the Bible is right and is absolute truth.