'Darkened' in the Bible

"Immediately after the suffering of those days, the sun will be darkened, and the moon will not give its light; the stars will fall from heaven, and the powers of heaven will be shaken.

"But in those days, after that suffering, the sun will be darkened and the moon will not give its light;

For although they knew God, they did not glorify him as God or give him thanks, but they became futile in their thoughts and their senseless hearts were darkened.

let their eyes be darkened so that they may not see, and make their backs bend continually."

They are darkened in their understanding, being alienated from the life of God because of the ignorance that is in them due to the hardness of their hearts.

Then the fourth angel blew his trumpet, and a third of the sun was struck, and a third of the moon, and a third of the stars, so that a third of them were darkened. And there was no light for a third of the day and for a third of the night likewise.

He opened the shaft of the abyss and smoke rose out of it like smoke from a giant furnace. The sun and the air were darkened with smoke from the shaft.