Morality can not be define the human beings, nevertheless it can be define by a superior power than humans themselves.

For instant morality means the measurement to define good from bad, right from wrong,

So for example if we create a product lets say a phone, then we manufacturer of the phone knows what is right for the phone and whats not

So the manufacturer writes a manual,

Hence, the creater of the humans must have given us a "Manual" as well??