Joseph Benson's Commentary of the Old and New Testaments - Revelation 6:12-17
Revelation 6:12-17. And I beheld Further in my vision; when he The Lamb; had opened the sixth seal; and lo! there was a great earthquake Greek, σεισμος μεγας εγενετο , there was a great concussion: for the expression comprehends the shaking of heaven as well as of the earth; and the sun became black as sackcloth of hair It lost its usual lustre, and looked black and dark, as in a total eclipse; and the moon became as blood Instead of appearing with its usual brightness in the... read more
Albert Barnes' Notes on the Whole Bible - Revelation 6:12-17
And I beheld when he had opened the sixth seal - See the notes at Revelation 5:1; Revelation 6:1.And, lo, there was a great earthquake - Before endeavoring to ascertain to what the sixth seal was designed to refer, it is proper, as in the previous cases, to furnish a particular explanation of the meaning of the symbols. All the symbols represented in the opening of this seal denote consternation, commotion, changes; but still they are all significant, and we are to suppose that something would... read more