Translation:

6. To establish a firm place for them in the land and to show Pharaoh Haman and their hosts at their hands the very things against which they were taking precautions.

Notes (Tafseer)

3331. Haman was evidently Pharaoh's minister, not to be confounded with a Haman who is mentioned in the Old Testament (Esther iii.1), as a minister of Ahasuerus (Xerxes) King of Persia, the same who invaded Greece, and ruled from B.C. 485 to 464.

3332. Pharaoh was trying to kill the Israelites. Instead, the Plagues of Egypt, invoked by Moses, killed thousands of Egyptians (vii. 133, and notes 1091-92), because "they were steeped in arrogance,-a people given to sin." In pursuing the Israelites in their flight, Pharaoh and his army were themselves overwhelmed in the sea.