Revelation 14:5 in the King James Version
And in their mouth was found no guile: for they are without fault before the throne of God.
Context
4 These are those who were not defiled with women, for they are virgins. These are those who follow the Lamb wherever he goes. These were redeemed by Jesus from among men, the first fruits to God and to the Lamb.
5 In their mouth was found no lie, for they are blameless.
6 I saw an angel flying in mid heaven, having an eternal Good News to proclaim to those who dwell on the earth—to every nation, tribe, language, and people.