In the Revelation of Jesus Christ by John, as it is written:
“And I beheld when he had opened the sixth seal, and, lo, there was a [GREAT EARTHQUAKE]; and [THE SUN BECAME BLACK AS SACKCLOTH OF HAIR, AND THE MOON BECAME AS BLOOD];
And the stars of heaven fell unto the earth, even as a fig tree casteth her untimely figs, when she is shaken of a mighty wind.
And the heaven departed as a scroll when it is rolled together; and every mountain and island were moved out of their places.
And the kings of the earth, and the great men, and the rich men, and the chief captains, and the mighty men, and every bondman, and every free man, hid themselves in the dens and in the rocks of the mountains;
And said to the mountains and rocks, Fall on us, and hide us from the face of him that sitteth on the throne, and from the wrath of the Lamb:
For the [GREAT DAY] of his wrath is come; and who shall be able to [STAND]?” (Revelation 6:12-17).
“Watch ye therefore, and pray always, that ye may be [ACCOUNTED WORTHY TO ESCAPE] all these things that shall come to pass, and to [STAND] before the Son of man” (Luke 21:36).
On the day and night, only God knows (Matthew 24:36) when heaven opens up to reveal a sign of Jesus (Matthew 24:30): “[THE SUN SHALL BE TURNED INTO DARKNESS, AND THE MOON INTO BLOOD], before the great and the terrible day of the LORD come” (Joel 2:31).
“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” (Joel 2:32).