POLISHED ARROW : Strong’s Hebrew 1305: POLISHED: To purify, select, polish, choose, purge, cleanse or make bright, test or prove, to cleanse, make shining, to polish arrows; to show oneself pure, just, kind.
Strong’s Hebrew 2671: ARROW: From chatsats; properly, a piercer, i.e. An arrow; by implication, a wound; figuratively, (of God) thunder-bolt; the shaft of a spear, archer, arrow, dart, shaft, staff, wound.
“In the hands of an Old Testament archer, a piece of wood went through a long and time-consuming process before it became a polished arrow. Even now the process requires great patience. Precision arrows cannot be made in haste. Skilled Old Testament archers actually began making their arrows a year in advance. They first had to find just the right kind of wood, usually the branches of an almond tree because they grew straighter than any other. That tree was also one of the first to bud in spring. The almond tree symbolizes ‘resurrection power.’ He carefully carves the wood into an arrow. Next, the arrow is soaked in Water (The Holy Spirit) to expose the wood grain. Next the archer places the arrow shaft in his quiver for a prescribed period of time — a waiting room, until the Archer puts the arrowhead on it and sends it forth from His Bow.” (Steve Porter)

“He has prepared His deadly weapons; He ordains His ARROWS with fire.” Psalm 7:13.

“Listen, O coastlands, to Me, And take heed, you peoples from afar! The LORD has called Me from the womb; From the matrix of My mother He has made mention of My name. And He has made My mouth like a sharp sword; In the shadow of His hand He has hidden Me, And made Me a POLISHED SHAFT; In His quiver He has hidden Me.” Isaiah 49:1-2 NKJV

“Your ARROWS pierce the hearts of the king’s foes; the nations fall beneath Your feet.” Psalm 45:5.

“Sharpen the ARROWS! Fill the quivers! The LORD has aroused the spirit of the kings of the Medes, because His plan is aimed at Babylon to destroy her, for it is the vengeance of The LORD — vengeance for His temple.” (We are His Temple) “For God will both favor your undertaking, and will enable you to accomplish it,” (Benson Commentary) Jeremiah 51:11.

“The LORD thundered from heaven; the voice of the Most High resounded — hailstones and coals of fire. He shot His arrows and scattered the foes; He hurled lightning and routed them. The channels of the sea appeared, and the foundations of the world were exposed, at Your rebuke, O LORD, at the blast of the Breath of Your nostrils.” Psalm 18:13-14.

“Though they intend You harm, the schemes they devise will not prevail. For You will put them to flight when YOUR BOW is trained upon them.” Psalm 21:11.