'Truth is both fixed and constant. It is not changing or something to be created. Good and evil are realities that are both extrinsic to us. The forces of good and evil are not determined by our choices and preferences. In opposition to the dominant mindset of our day, something is not evil simply because it is not in accord with what we feel or desire, and neither is something else good because we like it or enjoy it. Rather things are objectively good or evil regardless of how or what we may feel about them. This is why we must determine whether something is good or evil, right or wrong, based on the objective, unmoving standard of the Bible rather than our subjective, constantly shifting feelings and preferences.'
Tim Challies, The Discipline of Spiritual Discernment, p.95.
