en_tn/isa/29/22.md

who redeemed Abraham

This possibly refers to when Yahweh called Abraham from his home country and sent him to the promised land. (See: rc://en/ta/man/translate/figs-explicit)

Jacob will no longer ... his face ... he sees his children

Here "Jacob" represents his descendants. Alternate translation: "Jacob's descendants will no longer ... their faces ... they see their children" (See: rc://en/ta/man/translate/figs-metonymy)

nor will his face be pale

This is an idiom that means they will no longer be afraid. Alternate translation: "nor will they be afraid" (See: rc://en/ta/man/translate/figs-idiom)