Jamieson, Fausset and Brown on Revelation 11:9

9. they--rather, "(some) of the peoples."

people--Greek, "peoples."

kindreds--Greek, "tribes"; all save the elect (whence it is not said, The peoples ... but [some] of the peoples ... , or, some of the peoples ... may refer to those of the nations ..., who at the time shall hold possession of Palestine and Jerusalem).

shall see--So Vulgate, Syriac, and Coptic. But A, B, C, and Andreas, the present, "see," or rather (Greek, "blepousin"), "look upon." The prophetic present.

dead bodies--So Vulgate, Syriac, and Andreas. But A, B, C, and Coptic, singular, as in Re 11:8, "dead body." Three and a half days answer to the three and a half years (see on Re 11:2, 3), the half of seven, the full and perfect number.

shall not suffer--so B, Syriac, Coptic, and Andreas. But A, C, and Vulgate read, "do not suffer."

in graves--so Vulgate and Primasius. But B, C, Syriac, Coptic, and Andreas, singular; translate, "into a sepulchre," literally, "a monument." Accordingly, in righteous retribution in kind, the flesh of the Antichristian hosts is not buried, but given to all the fowls in mid-heaven to eat (Re 19:17, 18, 21).