There is a threefold groaning here.
Creation groans (Romans 8:22).--The sufferings of the dumb animals, under the brutal tyranny of man; in hard service; in the torture chambers of vivisectionists; to yield pleasure; to give food; or to provide dress--must fill the ear of Heaven with groans. The sighs of myriads of acres, condemned to bear the poisonous poppy or the barley for the manufacture of spirit, must be heard across the broad expanse of space. There is a discord, an oppression, a vanity in the universe around us, which constantly betrays the secret oppression of evil. Goethe said that Nature seemed to him to be like a captive maiden crying aloud for release.
The saints groan (Romans 8:23).--We wait for our adoption, for the manifestation of our sonship, for the redemption of our bodies from the last remnants of the fall; and as we wait, we groan beneath the pressure of the present, the weight of mortality, and with eager desire for the blessed advent of the Lord.
The Spirit groans (Romans 8:26).--The pressure of sin and sorrow in our world is heavy for Him to bear, and He sighs bitterly, as Jesus did when He stood face to face with the grave of His dead friend.
But these groans portend life, not death. They are full of hope, not despair. They are the pangs of birth, not the throes of death. Out of the agony of the present the new heavens and earth are being born.
"Unto you is given
To watch for the coming of His feet
Who is the glory of our blessed Heaven.
The work and watching will be very sweet,
Even in an earthly home;
And in such an hour as you think not
He will come."