Matthew Poole and continuators on Exodus 1:8

8 Now there arose up a new King over Egypt, which knew not Joseph.

(i. e.) Another King one of another disposition, or interest, or Family: for the Kingdom of Egypt did oft pass from one Family to another▪ as appears from the History of the Dyna[illegible: 1+ letters]es recorded in antient writers.

Or, acknowledged not, the vast obligations which Ioseph had laid not onely upon the Kingdoms of Egypt, and the King under whom Ioseph lived, but upon all his Successors, in regard of those vast additions of wealth and power which he had made to that crown. This phrase notes his ungrateful disowning and ill requiting of Iosephs favours. For words of knowledge in Scripture commonly include the affections and actions, as men are oft said not to know God, when they do not love nor serve him, and God is said not to know men, when he doth not love them.