πάντες ἐξ ἑνὸς στόματος ὑμνοῦσι

From LSJ

ἀλλ' οὐδὲν δεῖ παρὰ τὸν βωμόν σε βουλεύειν → better safe than sorry

Source

English > Greek (Woodhouse Quotes Reversed)

they all din into us with one voice