Here's a breakdown of the imagery:
* Tongue as a sharp sword: This compares the power of words to the sharpness and danger of a sword. Just like a sword can pierce flesh, words can pierce hearts and minds.
* Slays though it draws no blood: This emphasizes that the damage inflicted by words is not visible, but it can be just as severe as a physical wound. It refers to the emotional pain, mental anguish, and reputational damage words can cause.
This metaphor highlights the potential destructive power of words. It reminds us to be mindful of the impact our words can have on others, and to use them with care and respect.