Quote from Paragraph 7 of the 2nd Study Article from the June 15th, 2004 Watchtower Issue:
"Disregarding God's guidance concerning the sacredness of lifeblood can result in everlasting death."
Scripture for the Watchtower Society:
Rev 18:2
And he cried in a strong, great voice, saying, Babylon the great has fallen! It has fallen, and it has become a dwelling-place of demons, and a prison of every unclean spirit, and a prison of every unclean bird, even having been hated, [...] Rev 18:5 because her sins joined together, even up to Heaven, and God remembered her unjust deeds. Rev 18:6 Give back to her as also she gave back to you, and double to her double, according to her works. In the cup which she mixed, mix to her double. [...] Rev 18:24 And in her was found the blood of prophets, and of saints, and of all the ones having been slain on the earth.