Isaiah 13:5 (a) GOD describes His anger and His power as being weapons of destruction against His enemies. Sometimes it is pestilence, and sometimes famine. It might be disease, or the invading army. It might be the plague of locusts, frogs or flies. GOD knows how best to punish those who oppose Him. (See Jeremiah 50:25).
Jeremiah 51:20 (a) This type is used to describe the nation of Babylon which GOD used as an instrument for destroying other nations that were rebellious against Him, including Israel.
2 Corinthians 10:4 (b) This is descriptive of the gifts and graces of the Spirit; the spiritual armour, the spiritual sword, the Word of GOD, prayer, zeal, wisdom, godliness, earnestness, knowledge of the Word of GOD, all of these are used by the believer to defeat the enemies of our souls.