Deer can jump far and high. Jumping like a deer is an exaggeration for being able to move about quickly and easily. Alternate translation: "the lame man will jump high" (See: [[rc://en/ta/man/translate/figs-simile]] and [[rc://en/ta/man/translate/figs-hyperbole]])
This refers to people who cannot speak. They are referred to by their "tongues" to emphasize their healing. Alternate translation: "mute people will sing" (See: [[rc://en/ta/man/translate/figs-synecdoche]])