Parallel
Revelation 14:5
Nestle 1904 Greek New Testament · Berean Standard Bible
καὶ ἐν τῷ στόματι αὐτῶν οὐχ εὑρέθη ψεῦδος ἄμωμοί εἰσιν
And no lie was found in their mouths; they are blameless (note: TR includes before the throne of God.).