'Darkened' in the Bible
"And immediately after the tribulation of those days, 'the sun will be darkened and the moon will not give its light, and the stars will fall from heaven, and the powers of heaven will be shaken.'
"But in those days, after that tribulation, 'the sun will be darkened and the moon will not give its light,
For [although they] knew God, they did not honor [him] as God or give thanks, but they became futile in their reasoning, and their senseless hearts were darkened.
let their eyes be darkened so that they do not see, and cause their backs to bend {continually}."
being darkened in understanding, alienated from the life of God, because of the ignorance [that] is in them, because of the hardness of their heart,
And the fourth angel blew the 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 the day did not shine [with respect to] a third of it, and the night likewise.
And he opened the shaft of the abyss, and smoke went up from the shaft like smoke from a great furnace, and the sun and the air were darkened by the smoke from the shaft.
And the fifth poured out his bowl on the throne of the beast, and his kingdom became darkened, and they began chewing their tongues because of the pain.