"Call to mind" here is an idiom meaning "intentionally remember." Here it represents fulfilling his covenant. Alternate translation: "I will fulfill the covenant with their ancestors" (See: [[rc://en/ta/man/translate/figs-idiom]] and [[rc://en/ta/man/translate/figs-metonymy]])
This represents the knowledge of the nations. Alternate translation: "in the knowledge of the nations" or "and the nations knew about it" (See: [[rc://en/ta/man/translate/figs-metonymy]])