Krishna's Childhood in Vrindavana

When Yasoda and Nanda found Krishna as their son, they performed all the religious ceremonies in secret, to avoid Kamsa's wrath. The family astrologer, Gargamuni, told the family, "Your son Krishna is the Supreme Personality of Godhead. He will protect you from Kamsa's persecutions, and by His grace only, you will surpass all difficulties. Therefore raise Him carefully, because many demons will try to attack him."

This warning proved true because throughout His childhood, Krishna fought Kamsa's demons, along with all the other demons and jealous and misguided demigods who approached Him.

[Source: http://www.surrealist.org/gurukula/storymatters/krishna.html].