Awake, awake, put on strength, O arm of the LORD; awake, as in the ancient days, in the generations of old. Art thou not it that hath cut Rahab, and wounded the dragon? Art thou not it which hath dried the sea, the waters of the great deep; that hath made the depths of the sea a way for the ransomed to pass over? Therefore the redeemed of the LORD shall return, and come with singing unto Zion; and everlasting joy shall be upon their head: they shall obtain gladness and joy; and sorrow and mourning shall flee away.
This prompts the remnant to call on the LORD to deliver His people as He delivered them from Egypt and from Pharaoh, drying up the sea so the redeemed could cross over. The memory of God’s intervention in the past causes them to foresee the ransomed captives’ return to Zion.