There’s no reference to Christianity in the Constitution, except for the legal exemption of Sunday with respect to presidential vetoes (in Article I, Section 7) and the dating in the year of our Lord in Article VII. So how can the Constitution truly be a Christian document?
First, the laws reflect Christian moral laws, and the checks and balances system reflects the Christian distrust of man as a sinner. Second, the Constitution stayed out of the area of religion deliberately because it recognized that Christianity was already the established religion of every state, and because it also recognized that this was a matter of state and local rights. The states had not fought Parliament only to submit to another centralized government in the area of religion. Every state was prejudicial towards its own Christian framework: those who did not agree could move to another state or into the territories.
The First Amendment did NOT separate church and state. It says with respect to religion: Congress shall make no law respecting an establishment of religion or prohibiting the free exercise there.€ This meant that the federal government was barred from interfering with Christian laws and establishments of the 13 states. This was a matter of states rights exclusively.
Sorry, Supreme Court, there’s no separation of church and state€ in the Constitution. Further, let me say; although, America had some shortcomings, Christianity still prevailed in both the hearts of Americans and the laws of their government.