This is copied from Desiring God. “It Is Great Gain To Die: Five Reasons“
Our spirits will be made perfect (Hebrews 12:22-23).
There will be no more sin in us. We will be done with the inner war and the heartrending disappointments of offending the Lord who loved us and gave himself for us.
But you have come to Mount Zion and to the city of the living God, the heavenly Jerusalem, and to myriads of angels, to the general assembly and the church of the first-born who are enrolled in heaven, and to God, the Judge of all, and to the spirits of the just which have been made perfect.
We will be relieved of the pain of this world (Luke 16:25).
The joy of the resurrection will not yet be ours, but the joy of freedom from pain will be. Jesus tells the story of Lazarus and the rich man to show the great reversal that is coming.
[The rich man] he cried out and said, “Father Abraham, have mercy on me, and send Lazarus, that he may dip the tip of his finger in water and cool off my tongue; for I am in agony in this flame.” But Abraham said, “Child, remember that during your life you received your good things, and likewise Lazarus bad things; but now he is being comforted here, and you are in agony.”
We will be given profound rest in our soul (Revelation 6:9-11).
There will be a serenity beneath the eye and care of God that surpasses anything we have known here on the softest summer evening by the most peaceful lake at our most happy moments.
I saw underneath the altar the souls of those who had been slain because of the word of God, and because of the testimony which they had maintained; and they cried out with a loud voice saying, “How long, O Lord, holy and true, wilt Thou refrain from judging and avenging our blood on those who dwell on the earth?” And there was given to each of them a white robe; and they were told that they should rest for a while
We will experience a deep at-homeness (2 Corinthians 5:8).
The whole human race is homesick for God, without knowing it. When we go home to Christ there will be a contentment beyond any sense of security and peace we have ever known.
We are of good courage, I say, and prefer rather to be absent from the body and to be at home with the Lord.
We will be with Christ (Philippians 1:21-23).
Christ is a more wonderful person than anyone on earth. He is wiser, stronger, and kinder than anyone you enjoy spending time with. He is endlessly interesting. He knows exactly what to do and what to say at every moment to make his guests as glad as they can possibly be. He overflows in love and with infinite insight into how to use that love to make his loved ones feel loved. Therefore Paul said…
For to me, to live is Christ, and to die is gain. But if I am to live in the flesh, this will mean fruitful labor for me; and I do not know which to choose. But I am hard-pressed from both directions, having the desire to depart and be with Christ, for that is very much better.