en_tn/isa/63/09.md

Through all their suffering

Here "their" refers to the people of Israel. Isaiah included himself as a member of the people. AT: "Through all our suffering"

he suffered too

Here "he" refers to Yahweh.

the angel from his presence

This is an angel who is sent from God's presence.

he lifted them up and carried them

This refers to when God protected and saved the people of Israel from the Egyptians many years earlier. (See: rc://en/ta/man/translate/figs-metaphor and rc://en/ta/man/translate/figs-explicit)