en_tn/isa/50/04.md

The Lord Yahweh has given me a tongue as one of those who are taught

Here "me" refers to Yahweh's servant. The word "tongue" refers to speech. AT: "The Lord Yahweh has enabled me to speak like a wise student" (See: rc://en/ta/man/translate/figs-metonymy and rc://en/ta/man/translate/figs-simile and rc://en/ta/man/translate/figs-activepassive)

he awakens my ear to hear like those who are taught

Here "my ear" refers to Yahweh's servant. This means the servant listens to Yahweh the way a student listens to a teacher. (See: rc://en/ta/man/translate/figs-synecdoche)