Albert Barnes' Notes on the Whole Bible - Revelation 6:9-11
And when he had opened the fifth seal - notes at Revelation 5:1; Revelation 6:1.I saw under the altar - The four living creatures are no longer heard as in the opening of the first four seals. No reason is given for the change in the manner of the representation; and none can be assigned, unless it be, that having represented each one of the four living creatures in their turn as calling attention to the remarkable events about to occur, there seemed to be no necessity or propriety in... read more
The Pulpit Commentary - Revelation 6:10
And they cried with a loud voice, saying; i.e. the souls cried. Ebrard, Dusterdieck, Hengstenberg, make "the slain" nominative, in contradistinction to the "souls," which is both unnecessary and unnatural. Zullig compares Genesis 4:10 , "The voice of thy brother's blood crieth unto me from the ground." How long? (comp. Zechariah 1:12 , Zechariah 1:13 , "How long wilt thou not have mercy on Jerusalem? And the Lord answered with good words and comfortable words"). No doubt the souls... read more