How can we know when Jesus is coming back? If we have the light of the holy spirit and are walking in it! No man can know the day or the hour except my father in heaven! Who reveals all truth to us of the Father the Holy spirit! We can know and also that the rapture occurs on the day of sudden destruction it says do below! The modern church teachings purposely quench the holy spirit despise prophecies and Jesus said to the Lacadonian church to by eyesalve that they may see they think they need nothing but are, blind, poor, wretched and naked! There are very few awake listening to the spirit because because they focus on what can be seen as real not what cannot be seen that is.

  But ye have an unction from the Holy One, and ye know all things.
1 John 2:19-21 (in Context) 1 John 2 (Whole Chapter)
John 1:5
And the light shineth in darkness; and the darkness comprehended it not.
John 1:4-6 (in Context) John 1 (Whole Chapter)

 2For yourselves know perfectly that the day of the Lord so cometh as a thief in the night.

 3For 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.

 4But ye, brethren, are not in darkness, that that day should overtake you as a thief.

 5Ye are all the children of light, and the children of the day: we are not of the night, nor of darkness.

 6Therefore let us not sleep, as do others; but let us watch and be sober.

 7For they that sleep sleep in the night; and they that be drunken are drunken in the night.

 8But 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.