Mark 13:24
But in those days, following that distress, the sun will be darkened, and the moon will not give its light — the cosmic signs (sun darkened, moon failing) follow the tribulation and signal the transition to the Son of Man's coming. The cosmic-darkness language is drawn from Isaiah 13:10 (applied to Babylon's judgment), Ezekiel 32:7 (applied to Egypt's judgment), and Joel 2:31 (applied to the great day of the Lord). The cosmic signs communicate the scale of what is coming: not a local judgment but a universal disruption.