'Weapon' in the Bible

Look, I have created the craftsmanwho blows on the charcoal fireand produces a weapon suitable for its task;and I have created the destroyer to cause havoc.

No weapon that is formed against thee shall prosper; and every tongue that shall rise against thee in judgment thou shalt condemn. This is the heritage of the servants of the LORD, and their righteousness is of me, saith the LORD.