en_tn/heb/12/09.md

the Father of spirits

God, who has created and given us our spirits and also created all other spirits (See: rc://en/ta/man/translate/figs-idiom)

fruit of righteousness

Righteousness grows as a result of discipline like fruit grows on a tree. (See: rc://en/ta/man/translate/figs-metaphor)

trained by it

trained by discipline