What does Isaiah 5:28 mean?
Isaiah is describing the nature of the army coming to bring God's judgment on Judah and Jerusalem. He is likely pointing forward to the attack which came from the Assyrians (2 Kings 24:10–16). Ultimately, the exact identity of the invader is irrelevant. This is punishment from the Lord upon His people. Just as a general "attacks" by sending in troops, God is using an incredibly powerful army to accomplish His will.This passage has been describing the soldiers of this army as alert and well-equipped for battle (Isaiah 5:27). Now he adds that their arrows and bows are prepared for battle. The hooves of their horses are strong and unbreaking over the many miles toward Jerusalem. The wheels of their chariots spin like the wind as the miles rush pass. The Lord's judgment is coming.