The Ten Commandments are a set of rules or laws. The Bible says that God gave them to the people of Israel. The commandments exist in different versions. One version can be found in the Book of Exodus of the Bible. Another version can be found in the Book of Deuteronomy. In the Book of Exodus, the mountain where they were given is called Mount Sinai, the Book of Deuteronomy talks about Mount Horeb (the same Mt. Horeb where God called Moses from the burning bush(Exodus 3:1-3). Both are probably different names for the same mountain. The laws were written on stone tablets. These laws are important for Judaism and Christianity. Countries which follow those religions have some of the commandments as part of their Civil laws.