When David had succeeded in stealing Uriah’s wife, he no doubt felt he had scored a real conquest, but subsequent events showed instead that he had suffered a stunning defeat. He was never the same after his ‘conquest’. What the armies of the alien could never do on the field, David himself accomplished by one act of wrong-doing; that is, he brought about his own defeat. When he met Goliath he turned what looked like defeat into victory. When he met Bathsheba he turned a long record of victories into shameful defeat.
(A. W. Tozer)
"Therefore the Lord himself will give you a sign: The virgin will be with child and will give birth to a son, and you will call him Immanuel."
Isaiah 7: 14