Wondrous works in the land of Ham - The plagues inflicted on the Egyptians. Egypt is called the Land of Ham or Cham, because it was peopled by Misraim the son of Cham.

Wondrous works in the land of Ham,.... The same with Egypt; Mizraim, from whence Egypt had its name, being the son of Ham; See Gill on Psalm 78:51. See Gill on Psalm 105:23, and these wondrous things are the same plagues as before, so called because they exceeded the power of nature; the magicians themselves confessed the finger of God in one of them; and they were all of them such as might be truly said to be miracles.
And terrible things by the Red sea; or "in it", as the Syriac and, other versions; as the utter destruction of Pharaoh and his army, not one being left, which was doing terrible things in righteousness; and by which it appeared that with God is terrible majesty; and who shows himself to be terrible in his works, and even to the kings and princes of the earth; but all these things were soon forgot, which it might have been thought, being so amazing and terrible, would have made a lasting impression on them.