When a woman gives birth there is inevitably pain before the precious promise of the baby arrives. Regardless of how the birth is done, somewhere along the line there is signficant pain for the pregnant woman. So it is with us in Jesus. God’s promise will be fulfilled, but not without experience of significant pain on our part. Jesus used the same allusion when speaking to his disciples about his departure from them which he was about to fulfill through his death and resurrection and ascension, with the promise of what that was to bring (John 16).
And so when we’re going through the pain, we need to remember that such is often the prelude to God’s promise. And quite often the greater the pain, the greater the promise. Not that we are the source of the good that is to happen; only God is, from whom all blessings flow. But the gift somehow involves a process which changes us (cf: Genesis 32-33). The faith involved in receiving it, is a faith that comes not without struggle, a struggle that somehow not only meets us in our place of great need, but also meets the place of the world’s great need. So that in the end the blessings received are not only from God, but through, in and for God. So that the result is more than the world could imagine or achieve on its own.
So natural birth mirrors what spiritual birth is like from God. It may even seem painless at the time, but the gift brings with it inevitable suffering followed by the glory given both present and future in and through Jesus.