Most Relevant Verses
When He [the Lamb] broke open the sixth seal, I looked, and there was a great earthquake; and the sun grew black as sackcloth of hair, [the full disc of] the moon became like blood.
So the angel took the censer and filled it with fire from the altar and cast it upon the earth. Then there followed peals of thunder and loud rumblings and blasts and noises, and flashes of lightning and an earthquake.
Immediately after the tribulation of those days the sun will be darkened, and the moon will not shed its light, and the stars will fall from the sky, and the powers of the heavens will be shaken. Then the sign of the Son of Man will appear in the sky, and then all the tribes of the earth will mourn and beat their breasts and lament in anguish, and they will see the Son of Man coming on the clouds of heaven with power and great glory [in brilliancy and splendor].
For the stars of the heavens and their constellations will not give their light; the sun will be darkened at its rising and the moon will not shed its light.
Then the moon will be confounded and the sun ashamed, when [they compare their ineffectual fire to the light of] the Lord of hosts, Who will reign on Mount Zion and in Jerusalem, and before His elders will show forth His glory.
The earth quakes before them; the heavens tremble. The sun and the moon are darkened and the stars withdraw their shining. And the Lord utters His voice before His army, for His host is very great, and [they are] strong and powerful who execute [God's] word. For the day of the Lord is great and very terrible, and who can endure it? Therefore also now, says the Lord, turn and keep on coming to Me with all your heart, with fasting, with weeping, and with mourning [until every hindrance is removed and the broken fellowship is restored].read more.
Rend your hearts and not your garments and return to the Lord, your God, for He is gracious and merciful, slow to anger, and abounding in loving-kindness; and He revokes His sentence of evil [when His conditions are met]. Who knows but what He will turn, revoke your sentence [of evil], and leave a blessing behind Him [giving you the means with which to serve Him], even a cereal or meal offering and a drink offering for the Lord, your God? Blow the trumpet in Zion; set apart a fast [a day of restraint and humility]; call a solemn assembly. Gather the people, sanctify the congregation; assemble the elderly people, gather the children and the nursing infants; let the bridegroom [who is legally exempt from attending] go forth from his chamber and the bride out of her closet. [None is exempt from the humiliation.] Let the priests, the ministers of the Lord, weep between the porch and the altar; and let them say, Have pity and spare Your people, O Lord, and give not Your heritage to reproach, that the [heathen] nations should rule over them or use a byword against them. Why should they say among the peoples, Where is their God? Then was the Lord jealous for His land and had pity on His people. Yes, the Lord answered and said to His people, Behold, I am sending you grain and juice [of the grape] and oil, and you shall be satisfied with them; and I will no more make you a reproach among the [heathen] nations. But I will remove far off from you the northern [destroyer's] army and will drive it into a land barren and desolate, with its front toward the eastern [Dead] Sea and with its rear toward the western [Mediterranean] Sea. And its stench shall come up [like that of a decaying mass of locusts, a symbol and forecast of the fate of the northern army in the final day of the Lord], and its foul odor shall come up, because He has done great things [the Lord will have destroyed the invaders]! Fear not, O land; be glad and rejoice, for the Lord has done great things! Be not afraid, you wild beasts of the field, for the pastures of the wilderness have sprung up and are green; the tree bears its fruit, and the fig tree and the vine yield their [full] strength. Be glad then, you children of Zion, and rejoice in the Lord, your God; for He gives you the former or early rain in just measure and in righteousness, and He causes to come down for you the rain, the former rain and the latter rain, as before. And the [threshing] floors shall be full of grain and the vats shall overflow with juice [of the grape] and oil. And I will restore or replace for you the years that the locust has eaten -- "the hopping locust, the stripping locust, and the crawling locust, My great army which I sent among you. And you shall eat in plenty and be satisfied and praise the name of the Lord, your God, Who has dealt wondrously with you. And My people shall never be put to shame. And you shall know, understand, and realize that I am in the midst of Israel and that I the Lord am your God and there is none else. My people shall never be put to shame. And afterward I will pour out My Spirit upon all flesh; and your sons and your daughters shall prophesy, your old men shall dream dreams, your young men shall see visions. Even upon the menservants and upon the maidservants in those days will I pour out My Spirit. And I will show signs and wonders in the heavens, and on the earth, blood and fire and columns of smoke. The sun shall be turned to darkness and the moon to blood before the great and terrible day of the Lord comes.
That day is a day of wrath, a day of distress and anguish, a day of ruin and devastation, a day of darkness and gloom, a day of clouds and thick darkness,
The sun shall be turned into darkness and the moon into blood before the obvious day of the Lord comes -- "that great and notable and conspicuous and renowned [day].