There are two well-attested readings of Rev 22.14, the seventh and final blessing in the book. The reading accepted in the UBS 4th edition is
, ‘Blessed are those who wash their robes’ (RSV). Most twentieth-century NT editions, including Nestle-Aland, and most commentators agree with the UBS. But, in my view, the original text is the other well-attested reading,
, ‘Blessed are those who do his commandments’ (footnote in RSV). The manuscript attestation and versional evidence is not decisive for either reading, but patristic references, literary analysis, and consistency with the worldview in Revelation all favour the reading
.