Laws from religion

How often have those who oppose certain moralities are accused of forcing religious beliefs on all people? The fact of the matter is that many of our most important laws can be found in religion. Thou shall not steal, Thou shall not kill, thou shall not bare false witness(contempt of court) all can be found in the Bible and is used today in USA and almost everywhere. Bankruptcy is also laid  out in the Bible. There are also moral laws we find today such as incest and sex with animals written in religion. One may say these were common sense laws and don't need a religious book for them to be in place. Well it is common sense that from the first people on earth man and woman were physically designed to mate with each other. That is why we are all here. No religious teaching is needed to see that.If government was not allowed to make laws concerning morality we would be a country worse then we are now allowing anything goes against what is normal. Remember the laws in the Bible Old Testament were laws that governed the Nation of Israel so these laws from religion is nothing new.