en_tn/isa/01/17.md

make straight the oppression

“correct oppression”. Correcting someone’s behavior is spoken of as making it straight. In this case it would mean to stop people from oppressing others. Alternate translations: “rebuke oppressors” or “help those who are oppressed” (See: rc://en/ta/man/jit/figs-metaphor and rc://en/ta/man/jit/figs-abstractnouns)

give justice to the fatherless

"be fair to the children who do not have fathers"

defend the widow

"protect the women whose husbands have died"