Pleasing Talker
A person who can speak sweetly even with his enemy just to pacify him is called a pleasing talker. Kṛṣṇa was such a pleasing talker that after defeating His enemy Kāliya in the water of the Yamunā, He said, "My dear King of the snakes, although I have given you so much pain, please do not be dissatisfied with Me. It is My duty to protect these cows, which are worshiped even by the demigods. Only in order to save them from the danger of your presence have I been obliged to banish you from this place."
Kāliya was residing within the water of the Yamunā, and as a result the back portion of that river had become poisoned. Thus so many cows who had drunk the water had died. Therefore Kṛṣṇa, even though He was only four or five years old, dipped Himself into the water, punished Kāliya very severely and then asked him to leave the place and go elsewhere.
Kṛṣṇa said at that time that the cows are worshiped even by the demigods, and He practically demonstrated how to protect the cows. At least people who are in Kṛṣṇa consciousness should follow in His footsteps and give all protection to the cows. Cows are worshiped not only by the demigods. Kṛṣṇa Himself worshiped the cows on several occasions, especially on the days of Gopāṣṭamī and Govardhana-pūjā.