…even we ourselves groan within ourselves, waiting for the adoption, to wit, the redemption of our body. – Romans 8:23

Brethren, as soon as a man believes in Christ, he is no longer under the curse of the law. As to his spirit, sin hath no more dominion over him, and the law hath no further claims against him. His soul is translated from death unto life, but the body, this poor flesh and blood, doth it not remain as before? 

There is another point in which the saint is deficient as yet, namely, in the manifestation of our adoption...We have not yet the royal robes which become the princes of the blood; we are wearing in this flesh and blood just what we wore as the sons of Adam; but we know that when He shall appear who is the “first born among many brethren,” we shall be like Him.

There is a third thing in which we are deficient, namely, liberty, the glorious liberty of the children of God. The whole creation is said to be groaning for its share in that freedom. You and I are also groaning for it. Brethren, we are free! “If the Son therefore shall make you free, ye shall be free indeed.” But our liberty is incomplete…How shall the heir of God be content till he rests on his Father’s bosom, and is filled with all the fulness of God?

Brethren, we are like warriors fighting for the victory; we share not as yet in the shout of them that triumph…Those in heaven, have, as it were, stolen there. They are blessed, but they have not had their public entrance. They are waiting till their Lord shall descend from heaven with a shout, with the trump of the archangel, and the voice of God…After this consummation the believing heart is panting, groaning, and sighing. ~ C.H. Spurgeon

https://www.blueletterbible.org/Comm/spurgeon_charles/sermons/0788.cfm