Is truth absolute or relative?

This is a very very important question. Your eternal life hangs in the balance regarding this matter. Many believe truth is strictly in the eyes of the beholder, or it is simply relative. Is it okay to accept the ideology of, “your truth is your truth and my truth is my truth. What is true for me may not necessarily be truth for all?”  In a liberal society such as ours that is the new normal. What does the Bible have to say about truth?