en_tn_condensed/rom/06/10.md

For in regard to the death that he died to sin, he died once for all

The phrase "once for all" means to finish something completely. You can make this full meaning explicit in your translation. Alternate translation: "For when he died he broke the power of sin completely" (See: rc://en/ta/man/translate/figs-idiom and rc://en/ta/man/translate/figs-explicit)