In all these various persecutions of the Pandavas by the Kurus, the high-souled Vidura was always engaged in counter-acting their evil designs and in saving the persecuted Pandavas.
तेषां तु विप्रकारेषु तेषु तेषु महामतिः। मोक्षणे प्रतिकारे च विदुरोऽवहितोऽभवत्॥