But the fact is, Christ has been raised from the dead, the first fruits of those who are asleep. For since by a man death came, by a Man also came the resurrection of the dead. For as in Adam all die, so also in Christ all will be made alive. But each in his own order: Christ the first fruits, after that those who are Christ’s at His coming, 

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Now I say this, brothers and sisters, that flesh and blood cannot inherit the kingdom of God; nor does the perishable inherit the imperishable. Behold, I am telling you a mystery; we will not all sleep, but we will 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 will be changed. For this perishable must put on the imperishable, and this mortal must put on immortality. But when this perishable puts on the imperishable, and this mortal puts on immortality, then will come about the saying that is written: “Death has been swallowed up in victory. Where, O Death, is your victory? Where, O Death, is your sting?” The sting of death is sin, and the power of sin is the Law; but thanks be to God, who gives us the victory through our Lord Jesus Christ.

1 Corinthians 15:20-23,50-56

For our citizenship is in heaven, from which we also eagerly wait for a Savior, the Lord Jesus Christ; who will transform the body of our lowly condition into conformity with His glorious body, by the exertion of the power that He has even to subject all things to Himself.  Philippians 3:20-21

Beloved, now we are children of God, and it has not appeared as yet what we will be. We know that when He appears, we will be like Him, because we will see Him just as He is.

1 John 3:2 (NASB)