Theophylact of Ohrid — on Rom 8:21 (Commentary on Romans)

“So then, creation itself also "shall be delivered"; not you alone, but also that which is far inferior to you, having neither soul nor sense — even this, I say, shall share with you in the good things and shall no longer be corruptible, but shall become corresponding to you. When your body became corruptible, creation also became corruptible. Likewise, when your body shall become incorruptible, creation too shall become incorruptible. Therefore, if creation underwent suffering for your sake, then you also must endure suffering for God's sake; and if it hopes to be glorified, then all the more should you hope to be glorified. Even a father clothes his servants in fine garments for the honor of his sons. So too God has preserved creation for our honor.”