Do not think of Kṛṣṇa as an ordinary child, because He is the Supreme Personality of Godhead, inexhaustible and the Soul of all beings. The Lord has concealed His inconceivable opulences and is thus outwardly appearing to be an ordinary human being.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
मापत्यबुद्धिमकृथाः कृष्णे सर्वात्मनीश्वरे । मायामनुष्यभावेन गूढैश्वर्ये परेऽव्यये
māpatyabuddhimakṛthāḥ kṛṣṇe sarvātmanīśvare | māyāmanuṣyabhāvena gūḍhaiśvarye pare'vyaye
SB 11.5.49