Krishna's Mercy

“In the yoga system, by the perfection called mahima-siddhi, one can expand himself as he desires. The demon Aghasura expanded himself up to eight miles and assumed the shape of a very fat serpent. Having attained this wonderful body, he stretched his mouth open just like a mountain cave. Desiring to swallow all the boys at once, including Krishna and Balarama, he sat on the path.” (Krishna, The Supreme Personality of Godhead, Volume 1, Chapter 12)