And he opened his mouth in blasphemy against God, to blaspheme his name, and his tabernacle, and them that dwell in heaven.
Opened his mouth - the formula of a set speech, or series of speeches. Revelation 13:6-7 expand Revelation 13:5.
Blasphemy. So B, Andreas; but 'Aleph (') A C, 'blasphemies.'
And them. So Vulgate, Coptic, Andreas, Primasius, read; A C 'Aleph (') omit "and:" 'them that dwell [skenountas: tabernacle] in heaven;' not only angels, and departed souls of the righteous, but believers on earth, having their citizenship in heaven, whose life is hidden from the anti-Christian persecutor in the secret of God's tabernacle (Psalms 27:5; note, Revelation 12:12; margin, John 3:7).