The 1st is freedom of speech and religion. The 2nd is the unquestionable right to own and carry firearms. The 2nd guarantees the 1st.
Actually, the Second Amendment guarantees ALL the rest of the Constitution. Without it, the constitution is just some words scrawled on paper, that can’t be enforced. The old saying around here is “The Second Amendment is the only one you can lay your hand on when needed”