http://wol.jw.org/en/wol/d/r1/lp-e/1101989233
Do those of the “great crowd” referred to at Revelation 7:9, 10 also go to heaven?
The “great crowd in heaven” referred to at Revelation 19:1, 6 is not the same as the “great crowd” of Revelation 7:9 . The ones in heaven are not described as being “out of all nations” or as ascribing their salvation to the Lamb; they are angels. The expression “great crowd” is used in a variety of contexts in the Bible.— Mark 5:24; 6:34; 12:37 .
Couple of points on this:
1) Nowhere does it suggest that these are angels, instead when there is an angel it is clearly listed as such.
http://wol.jw.org/en/wol/b/r1/lp-e/nwt/E/2013/66/19#h=128:0-128:197
So not much help when trying to adamantly state that the "great crowd" are angels.
2) The “great crowd” references in the NWT of Mark 5:24; 6:34; 12:37 never actually mention the word "great" instead each reference uses the word "large". Not much use then when arguing that the expression "great crowd" is used elsewhere!
http://wol.jw.org/en/wol/b/r1/lp-e/nwt/E/2013/41/5#dcv_5_24
http://wol.jw.org/en/wol/b/r1/lp-e/nwt/E/2013/41/6#dcv_6_34
http://wol.jw.org/en/wol/b/r1/lp-e/nwt/E/2013/41/12#dcv_12_37
Dimebars!