CC Madhya 25.163

śuniyā lokera baḍa camatkāra haila
caitanya-gosāñi — ‘śrī-kṛṣṇa’, nirdhārila
Synonyms: 
śuniyā — hearing; lokera — of all the people; baḍa — very great; camatkāra — wonder; haila — there was; caitanya-gosāñi — Śrī Caitanya Mahāprabhu; śrī-kṛṣṇa — personally Lord Kṛṣṇa; nirdhārila — they concluded.
Translation: 
When everyone heard Śrī Caitanya Mahāprabhu’s explanation of the ātmārāma-śloka, everyone was astonished and struck with wonder. They concluded that Śrī Caitanya Mahāprabhu was none other than Lord Kṛṣṇa Himself.