It is noteworthy that it required a miracle for many of the greatest characters in the Bible to be born. Their mothers had a problem with barrenness. Consider Sarah and the birth of Isaac; or Rebecca and the birth of Esau and Jacob; or Rachel and the birth of Joseph and Benjamin; or Hannah and the birth of Samuel; or Elizabeth and the birth of John the Baptist. Barrenness is a form of lameness and disability. Whenever the Lord acts to fulfill a purpose of His, He makes the circumstances difficult; but whenever He plans something exceptional, He makes the situation impossible. Then when His purpose is fulfilled, in spite of the impossibility, all the glory goes to Him.
I found I had to accept His strength, through forgiveness and cleansing, for all my weakness. I had to recognize and acknowledge that in me (as well as in others whom I see around me) lies no good thing, apart from His indwelling presence. Only as I am daily willing for Him to crucify the self-life, the capital "I", can He live in and through me in His own triumphant, victorious life. So often I seem to have to learn lessons over and over again. Yet God is so graciously willing to go on teaching, so patiently waiting to fill and overflow with His daily enabling by His indwelling Holy Spirit.