Why does the Scripture plainly state that we are waiting for the redemption of our bodies? If they've been redeemed, they would be sinless. Our bodies are still corrupt, mortal. Are we waiting for the adoption or not?
Romans 8:23 And not only they, but ourselves also, which have the firstfruits of the Spirit, even we ourselves groan within ourselves, waiting for the adoption, to wit, the redemption of our body.
1 Corinthians 15
49 And as we have borne the image of the earthy, we shall also bear the image of the heavenly.
50 Now this I say, brethren, that flesh and blood cannot inherit the kingdom of God; neither doth corruption inherit incorruption.
51 Behold, I shew you a mystery; We shall not all sleep, but we shall all be changed,
52 In a moment, in the twinkling of an eye, at the last trump: for the trumpet shall sound, and the dead shall be raised incorruptible, and we shall be changed.
53 For this corruptible must put on incorruption, and this mortal must put on immortality.
54 So when this corruptible shall have put on incorruption, and this mortal shall have put on immortality, then shall be brought to pass the saying that is written, Death is swallowed up in victory.
Philippians 3:21 Who shall change our vile body, that it may be fashioned like unto his glorious body, according to the working whereby he is able even to subdue all things unto himself.
The adoption, the redemption of our bodies is the destination for all believers in Christ. It has not happened yet. We are predestined for it.
Ephesians 1:5 Having predestinated us unto the adoption of children by Jesus Christ to himself, according to the good pleasure of his will,
Romans 8:29 For whom he did foreknow, he also did predestinate to be conformed to the image of his Son, that he might be the firstborn among many brethren.
Brother, our destination is to be conformed to the image of Christ. This happens at the adoption when our bodies are redeemed, changed, and fashioned like unto His glorious body. Incorrupt, immortal bodies we will have for eternity. This event occurs at the rapture of the church.