G4654–σκοτίζω–skotizō

But immediately after the oppression of those days, the sun will be darkened, the moon will not give its light, the stars will fall from the sky, and the powers of the heavens will be shaken;

σκοτισθήσεται, skotisthēsetai “will be darkened,”

But in those days, after that oppression, the sun will be darkened, the moon will not give its light,

σκοτισθήσεται, skotisthēsetai “will be darkened,”

Because, knowing God, they didn't glorify him as God, neither gave thanks, but became vain in their reasoning, and their senseless heart was darkened.

ἐσκοτίσθη eskotisthē “was darkened”

Let their eyes be darkened, that they may not see. Bow down their back always."

σκοτισθήτωσαν skotisthētōsan “should be darkened”

The fourth angel sounded, and one third of the sun was struck, and one third of the moon, and one third of the stars; so that one third of them would be darkened, and the day wouldn't shine for one third of it, and the night in the same way.

σκοτισθῇ skotisthēa “may be darkened”