I submit my tongue as an instrument of righteousness when I make it bless them that curse me and pray for them who persecute me, even though it "automatically" tends to strike and wound those who have wounded me. I submit my legs to God as instruments of righteousness when I engage them in physical labor as service, perhaps carrying a burden the "second mile" for someone whom I would rather let my legs kick. I submit my body to righteousness when I do my good deeds without letting them be known, though my whole frame cries out to strut and crow.