89 What motivates you to live honorably in the world

Believer asks: If a man is nothing but the random arrangement of molecules, what motivates you to care and live honorably in the world? 

And skeptic answers: Well, if you're ready to do whatever God tells you and don't stop to think about whether it’s right or wrong, what motivates you to live honorably in the world?  

And intellectual dishonesty is in plenty among religious people. That's not very honorable.

Finally, I ask what "the random arrangement of molecules" means. It isn't clear to me.

Related post:
63 Define truth, reality, morals without God