And he opened the bottomless pit; pit of the abyss, as above. This phrase is omitted by א, B, Coptic, AEthiopic, and others. It is inserted by A, B, many cursives, Vulgate, Syriac, Andreas. And there arose a smoke out of the pit, as the smoke of a great furnace.
The smoke of the incense (Revelation 8:4) purified the prayers of the saints, making them acceptable before God; the smoke which ascends from the abyss clouds men's minds and darkens their understandings.
And the sun and the air were darkened by reason of the smoke of the pit. The air, becoming filled with the smoke, obscured the light of the sun, so that both appeared dark. This darkening of the atmosphere may have been suggested by the description of the locust plague (Exodus 10:15), or by the account in Joel 2:1-32.
But it is the smoke, not the locusts, which is here said to cause the obscurity; the locusts issue forth out of the smoke. It is doubtful whether we ought to seek any particular interpretation of the smoke; it is probably only accessory to the general picture.
If we may press the meaning so far, it is perhaps best to regard the smoke as the evil influence of the devil, which darkens men's understandings, and from which issue the troubles which are the result of heresy and infidelity, portrayed by the locusts (cf.
2 Corinthians 4:4, "In whom the god of this world hath blinded the minds of the unbelieving," etc.).