CC Madhya 5.94

ei mūrti giyā yadi ei śrī-vadane
sākṣī deha yadi — tabe sarva-loka śune”
Word for word: 
ei — this; mūrti — in the form; giyā — going; yadi — if; ei — this; śrī-vadane — from Your beautiful face; sākṣī — witness; deha — You give; yadi — if; tabe — then; sarva-loka — all people; śune — will hear.
Translation: 
“Only if You go there in this form of Gopāla and speak the words from Your beautiful face will Your testimony be heard by all the people.”