en_tn/ezk/03/20.md

He will die in his sin

"He will die as a sinner" or "He will die as someone guilty of disobedience"

I will require his blood from your hand

See how you translated this in Ezekiel 3:16.

since he was warned

"since you warned him" (See: rc://en/ta/man/translate/figs-activepassive)