Why is it important to mention God on our money?
Trust. If you live in a country that fears God and aspires to be good, then you can trust that the government will try to do the right thing. It is the Judeo-Christian belief in a single diety that gave us this country. I think that there are very few arguments that can be sustained that this is not the case. We are a country with a covernment that is not above God. The ideal is that being below God, and respectful of God, we would not as a nation do anything to offend God, including letting the value of currency be lost. Have you ever heard the phrase, "full faith and credit of the United States Government?" Where are you going to get the faith in the US Government if you don't have faith in God, and a common God at that?