It the birthing cry made by the Spirit of Jesus. This cry speaks of a conscious cry tot the Father of eternity. And this is why in the new covenant, religion has to take a back seat. No true child of God can feed on the trappings of religion. That was done away with at the cross.
Every true believer has eternity in their heart.
This cry of sonship speaks of God's eternal redemption that was set in place from the foundation of the world. We are the children of eternity. We carry in our hearts an eternal perspective. We have a longing for eternal things. We understand eternal things with our hearts, while we are often unable to put them down on paper.