Leo Szilard

Some people conclude that the injustices existing in the world prove there is no God. On the contrary, I conclude that God, being both just and merciful, will and can rectify all inequities in a life after death.

There are clearly many good politicians who are guided by religious belief, so the mix can work. But there's a line to be drawn. It would be hugely dangerous for a country's laws to be set by the scriptures, and particularly those of the expansionist religions.