We have received the Spirit of adoption but not yet the adoption.
The Spirit of adoption is an earnest (down-payment) (Eph.1:14) of the adoption of the body, which is yet to come in the future:
Rom 8:23 And not only they, but ourselves also, which have the firstfruits [down-payment] of the Spirit, even we ourselves groan within ourselves, WAITING for the adoption, to wit, the redemption of our BODY.
Rom 8:24 For we are saved by hope: but hope that is seen is not hope: for what a man seeth, why doth he yet hope for?
Rom 8:25 But if we hope for that we see not, then do we with patience WAIT for it.
I'm sorry brethren, but that the adoption of the body is a future reality, not a present one, is Bible basics taught in discipleship courses to new-born Christians.
Heb_5:12 For when for the time ye ought to be teachers, ye have need that one teach you again which be the first principles of the oracles of God; and are become such as have need of milk, and not of strong meat.