The author uses an exclamation to emphasize that we should obey God the Father. This can be expressed as a statement. AT: "Therefore even more so, we should obey the Father of spirits and live." (See: [[rc://en/ta/man/translate/figs-exclamations]])
This metaphor speaks of "holiness" as if it were an object that can be shared among people. AT: "so that we may become holy as God is holy" (See: [[rc://en/ta/man/translate/figs-metaphor]])
"Fruit" here is a metaphor for "result" or "outcome." AT: "it produces the peaceful result of righteousness" or "it produces righteousness, which results in peace" (See: [[rc://en/ta/man/translate/figs-metaphor]])
"who have been trained by discipline." The discipline or correction done by the Lord is spoken of as if it were the Lord himself. This can be stated in active form. AT: "whom God has trained by disciplining them" (See: [[rc://en/ta/man/translate/figs-personification]] and [[rc://en/ta/man/translate/figs-activepassive]])