What does Isaiah 18:5 mean?
That God waits to act does not mean God will never act. Nor does it mean He is not paying attention. Isaiah has called for the nations of the world to look for God's signal and to listen for His trumpet. The nations are desperate for a response to the threat of the Assyrian Empire. Isaiah seems to assure everyone that God will act to end that danger when the time is right (Isaiah 18:3–4).Isaiah now depicts the Lord as a gardener who waits for the perfect moment to prune unfruitful grape vines. He will clear the empty branches that keep the fruitful ones from flourishing. The timing of the pruning is important. It must come before the harvest, but after the blossoms when the flowers become grapes. Before that moment, it is too soon to prune. Afterwards, it will be too late. God is never too early or too late. Faced with evil and injustice, it can feel as if God is taking too long. But His timing is perfect, and His justice is greater than what we can imagine (Proverbs 20:22; Galatians 4:4; Titus 1:2–3).