Sword Piercings vs. Scorching Fire
Driving home: a worthless man devises mischief. Now listen to this, and in his lips there is as a scorching fire.
Martin contrasts the internal, hidden damage of a sword piercing (rash speaking) with the external, visible, and permanently scarring damage of scorching fire, to emphasize the different kinds of harm caused by the tongue.
And when you're pierced with a sword, deep, life-threatening internal injuries occur with very little blood on the outside. Now look at the imagery. Scorching fire. What does scorching fire do? Burn skin.
0:20 - 0:37 Read in full sermon