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]])
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]])