A person who can tolerate all kinds of offenses from the opposite party is known to be forgiving.
Lord Kṛṣṇa's forgiving quality is described in the Śiśupāla-vadha in connection with His forbidding the killing of Śiśupāla. King Śiśupāla was the monarch of the Cedi kingdom, and although he happened to be a cousin of Kṛṣṇa's, he was always envious of Him. Whenever they would meet, Śiśupāla would try to insult Kṛṣṇa and call Him ill names as much as possible. In the arena of the Rājasūya sacrifice of Mahārāja Yudhiṣṭhira, when Śiśupāla began to call Lord Kṛṣṇa ill names, Kṛṣṇa did not care and remained silent. Some of the people at the arena were prepared to kill Śiśupāla, but Kṛṣṇa restricted them. He was so forgiving. It is said that when there is a thundering sound in the clouds, the mighty lion immediately replies with his thundering roar. But the lion doesn't care when all the foolish jackals begin to make their less important sounds.
Śrī Yāmunācārya praises Kṛṣṇa's power of forgiveness with the following statement: "My dear Lord Rāmacandra, You are so merciful to have excused the crow's clawing on the nipples of Jānakī simply because of his bowing down before You." Once Indra, the King of heaven, assumed the form of a crow and attacked Sītā (Jānakī), Lord Rāmacandra's wife, by striking her on the breast. This was certainly an insult to the universal mother, Sītā, and Lord Rāmacandra was immediately prepared to kill the crow. But because later on the crow bowed down before the Lord, the Lord excused his offense. Śrī Yāmunācārya further says in his prayer that the forgiving power of Lord Kṛṣṇa is even greater than that of Lord Rāmacandra, because Śiśupāla was always in the habit of insulting Kṛṣṇa—not only in one lifetime, but continually throughout three lives. Still, Kṛṣṇa was so kind that He gave Śiśupāla the salvation of merging into His existence. From this we can understand that the goal of the monist to merge into the effulgence of the Supreme is not a very difficult problem. Persons like Śiśupāla who are consistently inimical to Kṛṣṇa can also get this liberation.