Obeying a commandment

"...in determining whether to obey and teach others to obey a commandment or point of doctrine, THE ONLY QUESTION is whether it is taught in the Bible, not 'how important' we might adjudge it to be in the Bible. How important is that commandment or teaching? Important enough that God put it in the Bible and that Christ commanded us to keep it." -- Bart Barber in The Differing Importance of Biblical Commands and Teachings