Put on — Put forth thy strength. Rahab — Egypt, from its pride or strength. The dragon — Pharaoh so called, Psalms 74:13.
Related Commentaries of Isaiah 51:9
Isaiah 51:9
9 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?