Perfection.

What happens to us when we die?

It has long been a divisive issue amongst Christians.

Catholics tend to believe in a Purgatory, as most Protestants do not.

Do we go immediately to Heaven, Hell, or a Purgatory?

First, I want to start in Philippians 3, where Paul states the Christian aspiration of perfection and attaining "the resurrection of the dead."

Because we know from 1 Corinthians 15 that the mystery that Paul describes is a bodily transformation, and that only the incorruptible can inherit the Kingdom and eternal life.

Now that I've said this, I want to turn your attention to the old testament book of Daniel, wherein it states that concerning this resurrection, there will be two categories: one that inherits everlasting life while the other inherits "shame and everlasting contempt."

Paul tells us concerning these "sleeping" persons that we are not all in the same boat.
Some are condemned and some have hope, the "Blessed Hope" of resurrection and eternal life.

Need some more scripture?
I'll turn to Daniel 11, where it mentions even the wise "stumbling."

Notice how the text mentions them receiving some help  to become "purified" and "made white."

Could this be a mention of a Purgatory?
It's quite possible.

It's a mystery, as well.

People usually go straight to 2 Corinthians 5:8 and say "We are confident, I say, and willing rather to be absent from the body, and to be present with the Lord."

Many try to interpret this as stating that we (believers) immediately go to paradise when we die, but when held up against other scriptures, the case does not hold water (except in the cases of children and martyrs). It points to the Day of the Lord (beginning one year prior to the Battle of Armageddon).

When paired with 2 Corinthians 5:5, it implies that it is the Holy Spirit that prepares us in Purgatory for paradise.

We know of the likes of Enoch and Elijah who didn't sleep.
Perfection or completeness is our goal.