Still, they did not deign to write a Constitution or Declaration of Independance which endorsed any specific faith, and in fact wrote the First Amendment to the Bill Of Rights in such a way as to proscribe a government-sponsored "official" religion.
Nowhere in either document is the name "Jesus" mentioned, nor is "Christianity". The Constitution, the only one of the two documents with the force of law, has no religious mentions whatsoever, and the Declaration mentions a "Creator" but once, and not in any specific setting.