en_tn/rom/10/03.md

For, failing to understand the righteousness that comes from God

Here "righteousness refers to the way God puts people right with himself. You can make this explicit in the translation. Alternate translation: "For because they did not know how God puts people right with himself" (See: rc://en/ta/man/translate/figs-explicit)

they did not submit to God’s righteousness.

"they did not accept God's way of putting people right with himself"