He hath made my mouth like a sharp sword; as he made me the great Teacher of his church and of the world, so he assisted me by his Spirit, and made my word or doctrine quick and powerful, and sharper than any two-edged sword, &c., as it is said to be, Hebrews 4:12, killing men's lusts, convincing, humbling, and converting their souls; and mighty to the pulling down of strong holds, and every high thing that exalteth itself against the knowledge of God, and bringing into captivity every thought to the obedience of Christ, as we read, 2 Corinthians 10:4,5. In the shadow of his hand hath he hid me; he will protect me by his power from all mine enemies, until I have finished the work for which he sent me. Made me a polished shaft; like an arrow, whose point is bright and polished; which therefore pierceth deeper. This metaphor signifies the same thing with the former, Christ's piercing of men's hearts by his word and Spirit. Quiver; where arrows are hid and kept. The quiver signifies the same thing with the shadow in the foregoing clause, even God's powerful and gracious protection of him from dangers and mischiefs.
Related Commentaries of Isaiah 49:2
Isaiah 49:2
2 And he hath made my mouth like a sharp sword; in the shadow of his hand hath he hid me, and made me a polished shaft; in his quiver hath he hid me;