We read in the Bible God is no respecter of persons. If we fully and properly understand the Bible as well, we would understand we cannot and should not exclude others of other religious faiths as Christians as well. We should be inclusive of all as God is inclusive of all.
Our freedom of religion is protected by the Constitution and deeply embedded in the Founding Principles. The Founding Fathers understood the importance of religion and morality for popular government and Republicanism.
It should not matter to us what one’s religion is. They are the same as we are and equal to us.