Incorrect interpretation. The First Amendment, as part of the Constitution, is supreme law of the land, and nothing may prevent free exercise of religion, i.e. so long as said law is upheld. (Which, of course, is about as upheld as Article 4 Section 4 Clause 2 with respect to invasion particularly by illegals.)
While it is true that nothing in the Constitution authorizes the federal government to impose gay marriage on the states, there is also nothing in the Constitution that prevents each state, or eventually all the states, from redefining or abolishing marriage …
Not Amendments 9 and 10?
Because the American People have accepted government schooling, the fed, the income tax, welfare, abortion, and gay marriage, the Constitution is defunct. There was never anything IN the Constitution that could prevent it …
The Tenth Amendment (Amendment X) to the United States Constitution, which is part of the Bill of Rights, was ratified on December 15, 1791. It expresses the principle of federalism, which undergirds the entire plan of the original Constitution, by stating that the federal government possesses only those powers delegated to it by the Constitution. All remaining powers are reserved for the states or the people. In drafting this amendment, its framers had two purposes in mind: first, as a necessary rule of construction; and second, as a reaffirmation of the nature of the federal system. Marriage is not mentioned in the Constitution, in any way, shape or form, so the STATES define what constitutes a marriage, and the States overwhelmingly have said marriage is a man and a woman, not a couple of sodomites that want to have sex 24/7, and absolutely can not bring children into the world as a result of that sex union. End of story.