Life
Do you believe in the sanctity of life? This is easy to believe in for infants and children who are in a state of innocence. What about adults who have issues and character flaws? This is a more severe test of your commitment to this principle. The sanctity of life is based on the creature being made in the image of the creator. This is still true even if the creature is fallen in sin. It is not based on the life being worthy, but is an intrinsic value. Do you see your fellow men and women as made in my image whether they believe or not? This gives you the same perspective I have, and an appreciation for the magnitude of the great commission.