The interpretation timeline
Psalm 105:22 Douay-Rheims

Wondrous works in the land of Cham: terrible things in the Red Sea.

A.D. 430 – 1771 2 witnesses

Patristic

before A.D. 750
430
A.D.
Augustine of Hippo Patristic
A.D. 354–430
“"They forgat God who saved them" [Psalm 106:21]. How did He save them? "Who did so great things in Egypt: Wondrous works in the land of Ham, and fearful things in the Red Sea" [Psalm 106:22]. The things that are wondrous, are also fearful; for there is no wonder without a certain fear: although these might be called fearful, because they beat down their adversaries, and showed them what they ought to fear.”
Source

Post-Reformation

c. 1650 – 1900
1771
A.D.
John Gill Reformed
1697–1771
“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 Psa 78:51. See Gill on Psa 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.”
Source
Modern · 1953 →

The in-app commentary runs from the Fathers to the early-modern record, then stops — that's where the public-domain sources end, not where the reading does. For the modern reading, follow the sources directly.