Absolute Truth
Why is it so important to understand and embrace the concept of absolute truth in what we believe? Simply because life has consequences for being wrong. Taking the wrong amount of a medication can kill you; making the wrong monetary decisions can cause financial ruin; boarding the wrong plane will take you to the wrong destination, believing a distorted gospel will take you to a Christ-less eternity in hell. We can be wrong about a lot of things in this life and still survive, but if we are wrong about what we are trusting for eternal life, we will pay for that mistake forever. Eternity is an awfully long time to be wrong.

It would be wise for us to consider the contrast between truth and error and righteousness and unrighteousness in Scripture. 1) For this reason God will send upon them a deluding influence so that they will believe what is false, in order that they all may be judged who did not believe the truth, but took pleasure in wickedness (2 Thess. 2:9–12). 
2) For the wrath of God is revealed from heaven against all ungodliness and unrighteousness of men who suppress the truth in unrighteousness (Rom. 1:18). 
3) God will render to each person according to his deeds; to those who by perseverance in doing good seek for glory and honor and immortality, eternal life; but to those who are selfishly ambitious and do not obey the truth, but obey unrighteousness, wrath and indignation (Rom. 2:6–8).
4) Love does not act unbecomingly; it does not seek its own, is not provoked, does not take into account a wrong suffered, does not rejoice in unrighteousness, but rejoices with the truth (1 Cor. 13:5–6).