en_tn_condensed/lam/03/58.md

you defended my soul's case

The author speaks of God keeping him from being killed by his enemies as if God had defended him in court as a lawyer defends someone and kept him from being killed. The word "soul" is a synecdoche for the whole person. Alternate translation: "you saved my life from my enemies. It is as though you defended me in court" (See: rc://en/ta/man/jit/figs-metaphor and rc://en/ta/man/jit/figs-synecdoche)

you redeemed my life

Jeremiah speaks of Yahweh saving him from death as if Yahweh had paid Jeremiah's captor so Jeremiah could go free. (See: rc://en/ta/man/jit/figs-metaphor)