'Fruit of Righteousness' in the Bible

Do horses run on rocks?Do men plow rocks with oxen? [Of course not!]Yet you have turned justice into poisonAnd the fruit of righteousness into wormwood (bitterness),

For the time being no discipline brings joy, but seems sad and painful; yet to those who have been trained by it, afterwards it yields the peaceful fruit of righteousness [right standing with God and a lifestyle and attitude that seeks conformity to God’s will and purpose].