Well it is closer than when HE ascended about 2000 years ago and closer than when Darby fell often his horse and had an epiphany; but it will not be secret and it will not be silent:
1st Thessalonians 4:16. For the Lord himself shall descend from heaven with a shout, with the voice of the archangel, and with the trump of God: and the dead in Christ shall rise first:
Matthew 24:30, 31
30. And then shall appear the sign of the Son of man in heaven: and then shall all the tribes of the earth mourn, and they shall see the Son of man coming in the clouds of heaven with power and great glory.
31. And he shall send his angels with a great sound of a trumpet, and they shall gather together his elect from the four winds, from one end of heaven to the other.
1st Corinthians 15:51-57
51. Behold, I shew you a mystery; We shall not all sleep, but we shall all be changed,
52. In a moment, in the twinkling of an eye, at the last trump: for the trumpet shall sound, and the dead shall be raised incorruptible, and we shall be changed.
53. For this corruptible must put on incorruption, and this mortal must put on immortality.
54. So when this corruptible shall have put on incorruption, and this mortal shall have put on immortality, then shall be brought to pass the saying that is written, Death is swallowed up in victory.
55. O death, where is thy sting? O grave, where is thy victory?
56. The sting of death is sin; and the strength of sin is the law.
57. But thanks be to God, which giveth us the victory through our Lord Jesus Christ.
Revelation 1:7. Behold, he cometh with clouds; and every eye shall see him, and they also which pierced him: and all kindreds of the earth shall wail because of him. Even so, Amen.
Revelations 6:12-17
12. 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;
13. 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.
14. And the heaven departed as a scroll when it is rolled together; and every mountain and island were moved out of their places.
15. 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;
16. 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:
17. For the great day of his wrath is come; and who shall be able to stand?
Revelation 11:15-19
15. And the seventh angel sounded; and there were great voices in heaven, saying, The kingdoms of this world are become the kingdoms of our Lord, and of his Christ; and he shall reign for ever and ever.
16. And the four and twenty elders, which sat before God on their seats, fell upon their faces, and worshipped God,
17. Saying, We give thee thanks, O Lord God Almighty, which art, and wast, and art to come; because thou hast taken to thee thy great power, and hast reigned.
18. And the nations were angry, and thy wrath is come, and the time of the dead, that they should be judged, and that thou shouldest give reward unto thy servants the prophets, and to the saints, and them that fear thy name, small and great; and shouldest destroy them which destroy the earth.
19. And the temple of God was opened in heaven, and there was seen in his temple the ark of his testament: and there were lightnings, and voices, and thunderings, and an earthquake, and great hail.
Revelation 19:11-21
11. And I saw heaven opened, and behold a white horse; and he that sat upon him was called Faithful and True, and in righteousness he doth judge and make war.
12. His eyes were as a flame of fire, and on his head were many crowns; and he had a name written, that no man knew, but he himself.
13. And he was clothed with a vesture dipped in blood: and his name is called The Word of God.
14. And the armies which were in heaven followed him upon white horses, clothed in fine linen, white and clean.
15. And out of his mouth goeth a sharp sword, that with it he should smite the nations: and he shall rule them with a rod of iron: and he treadeth the winepress of the fierceness and wrath of Almighty God.
16. And he hath on his vesture and on his thigh a name written, KING OF KINGS, AND LORD OF LORDS.
17. And I saw an angel standing in the sun; and he cried with a loud voice, saying to all the fowls that fly in the midst of heaven, Come and gather yourselves together unto the supper of the great God;
18. That ye may eat the flesh of kings, and the flesh of captains, and the flesh of mighty men, and the flesh of horses, and of them that sit on them, and the flesh of all men, both free and bond, both small and great.
19. And I saw the beast, and the kings of the earth, and their armies, gathered together to make war against him that sat on the horse, and against his army.
20. And the beast was taken, and with him the false prophet that wrought miracles before him, with which he deceived them that had received the mark of the beast, and them that worshipped his image. These both were cast alive into a lake of fire burning with brimstone.
21. And the remnant were slain with the sword of him that sat upon the horse, which sword proceeded out of his mouth: and all the fowls were filled with their flesh.
When Jesus Christ returns every person who ever lived will know it! Notice the sound of the trumpet. GOD tells us through the Apostles John and Paul that it will be the seventh and last trumpet.