In his book, The Pursuit of Holiness, Jerry Bridges has a simple, but very helpful formula for knowing right from wrong (p. 88)
Years ago a friend gave me what he called his “Formula: How to Know Right from Wrong.” The formula asks four questions based on three verses in 1 Corinthians:
-”‘Everything is permissible for me’ – but not everything is beneficial” (1 Corinthians 6:12). Question 1: Is it helpful – physically, spiritually, and mentally?
-”‘Everything is permissible for me’ – but I will not be mastered by anything” (1 Corinthians 6:12). Question 2: Does it bring me under its power?
-”Therefore, if what I eat causes my brother to fall into sin, I will never eat meat again, so that I will not cause him to fall” (1 Corinthians 8:13). Question 3: Does it hurt others?
-”So whether you eat or drink or whatever you do, do it all for the glory of God” (1 Corinthians 10:31). Question 4: Does it glorify God?
As simple as this formula may appear, it is powerful in developing conviction – if we are willing to use it. These questions can get rather searching. But they must be asked if we are to pursue holiness as a total way of life.