While we do not really know too much about heaven from the Bible (it talks more about the “kingdom” than the literal place) there is a lot of information about Jesus coming back.

Perhaps this is because there will be a great deal of disinformation about the return of Jesus - something we are warned about by Jesus himself.  (Matthew 24.4 & 5)

These are some of the literal things that will happen before Jesus come back.

The disciples wanted to know when Jesus would come back.  They are not the only ones!  but Jesus said, that no one knows - not even Jesus himself - only the Father.  Matthew 24.36

But Jesus also said that these things must happen first:

There will be false Christ's pretending to be Jesus coming back.

There will be wars and rumors of wars.

Famines

Earthquakes

Tribulation (tough times)

Jesus followers will be hated

Lawlessness

(Matthew 24.6-14)

These are some of the literal things that will happen as Jesus comes back.

Every eye shall see Jesus returning (Revelation 1.7)

He shall return just as he left last time (disappearing/appearing in the clouds -Acts 1.11)

It’ll be really really bright - just like lightening (Matthew 24.27)

A great sound of a trumpet, so loud the dead in Christ will be raised (I Thessalonians 4.16)

A Fanciful idea?

These words and ideas seem a cross between science fiction and religious fanaticism at best.  But we would point to the fact that so much of scripture from the past came true - why not this?  Old Testament prophecies were extremely exact (as you read the gospel of Matthew in particular, the author goes to great length to demonstrate this) about Jesus’ life and actions.

Official language

The second coming of Christ is the blessed hope of the church, the grand climax of the gospel. The Savior's coming will be literal, personal, visible, and worldwide. When He returns, the righteous dead will be resurrected, and together with the righteous living will be glorified and taken to heaven, but the unrighteous will die. The almost complete fulfillment of most lines of prophecy, together with the present condition of the world, indicates that Christ's coming is imminent. The time of that event has not been revealed, and we are therefore exhorted to be ready at all times.

The Second Advent

The first Advent is celebrated every Christmas.  Jesus came to this earth tot live and die for us.  When comes again, he is not going to stay this time - He is coming back to take us to heaven with him.  As we read the Bible there are some significant events that will happen at the this time:

1. 1. People will be brought back to life. Those who died within the saving grace of Jesus will be brought back to life at this point.  I Thessalonians 4 starting at verse 16 says - The Lord himself will descend  from heaven with a cry of command - and the dead in Christ will raise first.
   

2. 2.Those who are alive at Jesus return waiting in his grace will, along with the resurrected, receive new bodies. Paul said “those of us who remain”, but let’s face ti, he was jumping the gun a bit!  But I Corinthians says - Behold! I tell you a mystery.  We shall not all sleep, but we shall all be changed, in a moment, in the twinkling of an eye, at the last trumpet. For the trumpet will sound, and the dead will be raised imperishable, and we shall be changed. For this perishable body must put on the imperishable, and this mortal body must put on immortality. When the perishable puts on the imperishable, and the mortal puts on immortality, then shall come to pass the saying that is written:  "Death is swallowed up in victory.  O death, where is your victory. O death, where is your sting?"