Isaiah 41:15
“Behold, I have made you into a new sharp threshing instrument with teeth. You will thresh the mountains, and beat them small, and will make the hills like chaff.”
What does Isaiah 41:15 mean?
God is telling his people they're being equipped with strength and purpose they didn't have before. A threshing instrument was a practical, powerful tool that separated valuable grain from worthless chaff, so this image means God is giving them the ability to accomplish what seems impossible and to distinguish what truly matters from what doesn't. The "mountains" and "hills" represent the massive obstacles and powerful forces standing against them, things that looked unmovable but will crumble under the strength God provides. This is encouragement for people facing overwhelming challenges: you're not being left defenseless, but actively equipped by God to break through what has kept you trapped.