I went out after him, and struck him, and delivered it out of his mouth; and when he arose against me, I caught him by his beard, and struck him, and killed him.
I caught [him] by his beard; such as lions have; hence a lion is often called in Homer g λις ηευγενειος, the well-bearded lion. Kimchi thinks the beard with the nether jaw is meant, which David caught hold on: