Common Ethics and God Existence

When one thinks why all people are in agreement that the truthful is good and the liar is bad, I find it is extremely amazing that all these dozens of people are different in language, color, race, nationality and religion but are agreeing at the same time on simple fact like "Truthful Is Good!!". There is no way for that to happen except all these people have a common factor who is not human being, otherwise they would divide into groups regarding the truth or fallacy of "Truthful Is Good" because there would be another human beings that adopt the opposite!!, what do you think? I think the reference is God who implanted this original and common value inside our unconsciousness even before we get born.