There is a very long tradition of religionist arguing that morality the direct result of god prescribing a set of code governing human behaviour. For Christians, this code is inscribed in the bible and Christians have long argued that without such god-given moral code, society would be left adrift and trip into "immorality".

But is it true that societal moral codes are god-given?

Not all societal moral codes are God-given. . .but Christianity has said a lot about morality/immorality that has gone a long way in influencing society's present view of morality.

none whatsoever

@post
you get your morals from your parents as a child. I have plenty of friends who are not religious and have good morals and i know you do too.