Why must a brahmana be free of envy? Because envious persons are also proud. They cannot see the good qualities in others, nor can they see Krishna in everyone’s heart. This vision is essential to brahminical life, because it is the duty of brahmanas to teach. How can one who cannot see Krishna in the hearts of others and only sees their bad qualities preach to them? This is especially damaging if they cannot see the good qualities in the devotees.