"I am gathering herbs for food," she replied, "for I have but one cow and it gives no milk; the poor must live as they can." Columba reproached himself bitterly that this poor woman should fare worse than he did. "We seek to win heaven," he cried, "by our austerities, and this poor woman, who is under no such obligation, outdoes us." Henceforward he declared he would make his meal of the wild herbs and nettles that he had seen her gathering, and gave strict orders that nothing else should be served to him. He even reproved Baithen, whom he so dearly loved, with unwonted severity, because, unable to bear the sight of his abbot's wretched fare, he had put a little piece of butter into the pot in which it was being cooked. The heavenly light that the holy Brendan had seen surrounding Columba on that memorable day at Teilte was now frequently beheld by his companions. At night it could be seen shining through the chinks in the rough door of his little cell when all was in darkness, and the silence of the night was only broken by the voice of the holy abbot praying and singing the praises of God. One winter's night, one of the younger brethren had remained in the church to pray after all had gone to rest. At midnight the door opened softly and Columba entered. A glory of golden light came with him, illuminating the church from wall to wall and from floor to roof. The little chapel where the brother knelt was flooded with the strange radiance and his soul was filled with a heavenly consolation. Columba knelt for many hours in prayer, and still the heavenly light shone round him as he prayed; while the brother watched him awestruck, scarcely daring to move for fear of being heard. The next day he was sent for by the abbot, who blessed him and gently bade him say nothing of what he had seen during the night. Two of his religious, Baithen the beloved, and Diarmaid his faithful attendant, who were often in his cell to help him with his work and to carry out his instructions, noticed one day a sudden ray of joy shining from their master's eyes. A moment later the joyful expression gave place to one of intense sadness, and they begged Columba to reveal to them what it was that caused him grief.