Hebrews 4:12 says the word of God is sharper than what?

Answer: Any double-edged sword

The word of God is living and active, sharper than any double-edged sword, dividing soul and spirit, joints and marrow.

“For the word of God is living and active. Sharper than any double-edged sword, it pierces even to dividing soul and spirit, joints and marrow. It judges the thoughts and intentions of the heart.”— Hebrews 4:12 (BSB)