Ezekiel 20:43

But the tax collector stood at a distance [i.e., inconspicuously] and would not even look up to heaven, but struck his chest [i.e., in remorse], saying, 'God, [please] have mercy on a sinner like me.'

See how the very fact that you were made sorry from a godly motive has produced earnestness in you! [It produced] a desire to vindicate yourselves [i.e., by making amends for your wrongdoing]; an attitude of just anger [i.e., toward the wrongdoers]; a sense of fear [i.e., a fear of God for doing wrong]; an eager desire [i.e., to do the right thing]; a zeal [i.e., to correct problems]; and an attitude of avenging [i.e., that punished the wrongdoer]. You demonstrated in everything [you did] that you were pure [i.e., innocent] in this matter. [Note: This whole description of their conduct appears to be a reference to the incident mentioned in 2:1-11].