Krsna Himself cannot fully understand the conditions, the mode of progress, the happiness and unhappiness, and the moods of ecstatic love of His devotees. He therefore accepts the role of a devotee to taste these emotions fully

Expressions researched:
"Krsna Himself cannot fully understand the conditions, the mode of progress, the happiness and unhappiness, and the moods of ecstatic love of His devotees. He therefore accepts the role of a devotee to taste these emotions fully"

CC Antya-lila

Kṛṣṇa Himself cannot fully understand the conditions, the mode of progress, the happiness and unhappiness, and the moods of ecstatic love of His devotees. He therefore accepts the role of a devotee to taste these emotions fully.

CC Antya 18.16-17, Translation:

Kṛṣṇa Himself cannot fully understand the conditions, the mode of progress, the happiness and unhappiness, and the moods of ecstatic love of His devotees. He therefore accepts the role of a devotee to taste these emotions fully.