PURPORT

The word maya is used in the sense of illusion. Considering the Supreme Personality of Godhead to be his own son, Maharaja Nabhi was certainly in illusion, but this was transcendental illusion. This illusion is required; otherwise how can one accept the supreme father as his own son? The Supreme Lord appears as the son of one of His devotees, just as Lord Krsna appeared as the son of Yasoda and Nanda Maharaja. These devotees could never think of their son as the Supreme Personality of Godhead, for such appreciation would hamper their relationship of paternal love.