Prahlada Maharaja sometimes felt that the Lord was far away from him and therefore called Him loudly. When he saw that the Lord was before him, he was fully jubilant. Sometimes, thinking himself one with the Supreme, he imitated the Lord’s pastimes, and in separation from the Lord he would sometimes show symptoms of madness.

As a child cries when left by his mother, when Prahlada Maharaja felt that the Lord was away from him he began to cry (nadati). Again, a devotee like Prahlada sometimes sees that the Lord is coming from a long distance to pacify him, like a mother responding to a child, saying, “My dear child, do not cry. I am coming.” Then the devotee, without being ashamed due to his surroundings and circumstances, begins to dance, thinking, “Here is my Lord! My Lord is coming!” Thus the devotee, in full ecstasy, sometimes imitates the pastimes of the Lord, just as the cowherd boys used to imitate the behavior of the jungle animals. However, he does not actually become the Lord. Prahlada Maharaja achieved the spiritual ecstasies described herein by his advancement in spiritual understanding.

From Srila Prabhupada’s purport to SB 7.4.40