Joel 3:10-11,15-16 KJV
[10] Beat your plowshares into swords, and your pruninghooks into spears: let the weak say, I am strong. [11] Assemble yourselves, and come, all ye heathen, and gather yourselves together round about: thither cause thy mighty ones to come down, O Lord. [15] The sun and the moon shall be darkened, and the stars shall withdraw their shining. [16] The Lord also shall roar out of Zion, and utter his voice from Jerusalem; and the heavens and the earth shall shake: but the Lord will be the hope of his people, and the strength of the children of Israel.

Acts 2:16-21 KJV
[16] But this is that which was spoken by the prophet Joel; [17] And it shall come to pass in the last days, saith God, I will pour out of my Spirit upon all flesh: and your sons and your daughters shall prophesy, and your young men shall see visions, and your old men shall dream dreams: [18] And on my servants and on my handmaidens I will pour out in those days of my Spirit; and they shall prophesy: [19] And I will shew wonders in heaven above, and signs in the earth beneath; blood, and fire, and vapour of smoke: [20] The sun shall be turned into darkness, and the moon into blood, before that great and notable day of the Lord come: [21] And it shall come to pass, that whosoever shall call on the name of the Lord shall be saved.

Joel 2:1-2,30-32 KJV
[1] Blow ye the trumpet in Zion, and sound an alarm in my holy mountain: let all the inhabitants of the land tremble: for the day of the Lord cometh, for it is nigh at hand; [2] A day of darkness and of gloominess, a day of clouds and of thick darkness, as the morning spread upon the mountains: a great people and a strong; there hath not been ever the like, neither shall be any more after it, even to the years of many generations. [30] And I will shew wonders in the heavens and in the earth, blood, and fire, and pillars of smoke. [31] The sun shall be turned into darkness, and the moon into blood, before the great and the terrible day of the Lord come. [32] And it shall come to pass, that whosoever shall call on the name of the Lord shall be delivered: for in mount Zion and in Jerusalem shall be deliverance, as the Lord hath said, and in the remnant whom the Lord shall call.

1 Thessalonians 5:1-9 KJV
[1] But of the times and the seasons, brethren, ye have no need that I write unto you. [2] For yourselves know perfectly that the day of the Lord so cometh as a thief in the night. [3] For when they shall say, Peace and safety; then sudden destruction cometh upon them, as travail upon a woman with child; and they shall not escape. [4] But ye, brethren, are not in darkness, that that day should overtake you as a thief. [5] Ye are all the children of light, and the children of the day: we are not of the night, nor of darkness. [6] Therefore let us not sleep, as do others; but let us watch and be sober. [7] For they that sleep sleep in the night; and they that be drunken are drunken in the night. [8] But let us, who are of the day, be sober, putting on the breastplate of faith and love; and for an helmet, the hope of salvation. [9] For God hath not appointed us to wrath, but to obtain salvation by our Lord Jesus Christ,