The quaking of mountains symbolizes God's overwhelming power and presence. This imagery is reminiscent of the dramatic events at Mount Sinai, where God gave the Ten Commandments to Moses and established a covenant with Israel. Such a display of divine power serves to remind the Israelites of God's authority and His commitment to them. It underscores that God is not distant but actively involved in the world, capable of altering the very fabric of nature to achieve His purposes.
This verse is part of a victory song, celebrating God's intervention on behalf of His people. It reassures believers of God's ability to protect and guide them through life's challenges. By recalling the past, it encourages faith in God's future actions, reinforcing the idea that the same God who shook Sinai is present and powerful today. This message is timeless, offering comfort and hope to all who trust in God's enduring promise and presence.