There's a bit of a problem with your premise.
Humans are not obligated to follow their moral voice. I dare say that every human violates his or her own moral code at least occasionally, and even ones who don't certainly could. The conscience is a source of suggestion, not an absolute imperative, and the strength/nature of the conscience will vary from person to person.
Some people feel promiscuous sex, for instance, is immoral, whereas others feel sex is always morally acceptable as long as it's consensual and safe. If their conscience were coming from the same source with the same moral rules, why would their morals be so different?
Humans are not obligated to follow their moral voice. I dare say that every human violates his or her own moral code at least occasionally, and even ones who don't certainly could. The conscience is a source of suggestion, not an absolute imperative, and the strength/nature of the conscience will vary from person to person.
Some people feel promiscuous sex, for instance, is immoral, whereas others feel sex is always morally acceptable as long as it's consensual and safe. If their conscience were coming from the same source with the same moral rules, why would their morals be so different?
Verbatim from the mouth of Jesus (retranslated from a retranslation of a copy of a copy):
"Do not judge, or you too will be judged. For in the same way you judge others, you too will be judged, and with the measure you use, it will be measured to you. How can you see your brother's head up his ass when your own vision is darkened by your head being even further up your ass? How can you say to your brother, 'Get your head out of your ass,' when all the time your head is up your own ass? You hypocrite! First take your head out of your own ass, and then you will see clearly who has his head up his ass and who doesn't." Matthew 7:1-5 (also Luke 6: 41-42)
Also, I has a website: www.RedbeardThePink.com
"Do not judge, or you too will be judged. For in the same way you judge others, you too will be judged, and with the measure you use, it will be measured to you. How can you see your brother's head up his ass when your own vision is darkened by your head being even further up your ass? How can you say to your brother, 'Get your head out of your ass,' when all the time your head is up your own ass? You hypocrite! First take your head out of your own ass, and then you will see clearly who has his head up his ass and who doesn't." Matthew 7:1-5 (also Luke 6: 41-42)
Also, I has a website: www.RedbeardThePink.com