What does Revelation 14:5 mean?

This verse further describes the 144,000 as totally honest and blameless. They stood resolutely against the deception of the age that reached its peak in the words and actions of the false prophet. Whereas the false prophet deceived the masses by his wonders, the 144,000 faithfully represented Jesus, who is the truth (John 14:6).

These faithful followers of the Lamb are also depicted as "blameless." The word translated "blameless" is the Greek amōmoi, which describes an animal that has passed inspection and is qualified to be a sacrifice because it has no defect. The apostle Peter described Jesus as having redeemed us with his blood, "like that of a lamb without blemish or spot" (1 Peter 1:19). Although the 144,000 are not sinless, they cannot be rightfully accused of any lies or wrongdoing. We, too, ought to live in such a way that no one will be able to accuse us of bad speech or evil deeds.