Maybe he's saying he thinks that government should not associate with any religion because it has the power to impact many peoples' lives. And if they do so because a particular religion directed them to, it clearly shows a dangerous impact on society founded under religious bias. If one person is or is not religious, it doesn't matter what someone else says about it. But it does matter if the government gets to say anything about it. That's why he advocated a separation of church and State.