The killing of Aghasura took place when Krsna and all His boyfriends were under five years old. Children under five years old are called kaumara, from five years up to the tenth year they are called pauganda, and from the tenth year up to the fifteenth year they are called kaisora. After the fifteenth year, boys are called youths. For one year there was no discussion of the incident of the Aghäsura demon in the village of Vraja. But when the boys attained their sixth year, they informed their parents of the incident with great wonder.

For Sri Krsna, the Supreme Personality of Godhead, who is far greater than such demigods as Lord Brahmä, it is not at all difficult to award one the opportunity of merging with His eternal body. This He awarded to Aghasura. Aghasura was certainly the most sinful living entity, and it is not possible for the sinful to merge into the existence of the Absolute Truth. But in this particular case, because Krsna entered into Aghasura's body, the demon became fully cleansed of all sinful reactions. Persons constantly thinking of the eternal form of the Lord in the shape of the Deity or in the shape of a mental form are awarded the transcendental benediction of entering into the kingdom of God and associating with the Supreme Personality of Godhead. So we can just imagine the elevated position of someone like Aghasura, into whose body the Supreme Personality of Godhead, Krsna, personally entered. Great sages, meditators and devotees constantly keep the form of the Lord within their hearts, or they see the Deity form of the Lord in the temples; in that way they become liberated from all material contamination and at the end of the body enter into the kingdom of God. This perfection is possible simply by keeping the form of the Lord within the mind. But in the case of Aghasura, the Supreme Personality of Godhead personally entered. Aghasura's position was therefore greater than the ordinary devotee's or the greatest yogi's.

A.C. Bhaktivedanta Swami Prabhupada
The Krsna Book
© 1970 A.C. Bhaktivedanta Swami Prabhupada