Final answer:
When God stood according to Habakkuk 3:6, the ancient mountains crumbled, symbolizing God's power over the natural world.
Step-by-step explanation:
When God stood, according to Habakkuk 3:6, the ancient mountains crumbled. This is a reference to a display of God's power and majesty in the Bible, where the mountains are often symbols of ancient and enduring strength. The verse suggests that even the oldest and most stable parts of the earth are subject to God's will and can be altered by divine action. It's part of a larger passage that describes a theophany, a manifestation of God in the natural world, which often includes dramatic imagery of the earth responding to God's presence.