Deism actually discredits the organized religion as it view the organized form of religion to be bases of exploitation. Deists view with extreme suspicion any efforts by other humans to claim divine authority, such as claiming to be a "prophet" or citing "sacred scripture" said to be written by alleged.  Placing faith in scriptures, prophets, priests, churches, "holy" figures, or traditions is surrendering your personal reason to another source.  Usually, this other source has far less interest in "the state of your soul" as the accumulation of wealth and political power. 

Here are some comments by some of the most recognized western philosopher as we know them:

"This most beautiful system [The Universe] could only proceed from the dominion of an intelligent and powerful Being."
-Isaac Newton

"That deeply emotional conviction of the presence of a superior reasoning power, which is revealed in the incomprehensible universe, forms my idea of God."
- Albert Einstein

They both seem to have believed in God (or some super natural power) but may not have subscribed to any organized form of religion. It also bring an interesting thought about god within, which is an interesting idea and have been preach by Sufi’s and mystical thinkers.