Psalm 139:13 says so eloquently:
"You made all the delicate, inner parts of my body and knit me together in my mother’s womb. " (NLT)
"Lo, children are an heritage of the Lord: and the fruit of the womb is his reward."
Psalm 127:3 (KJV)
" For this child I prayed; and the Lord hath given me my petition which I asked of him."
1 Samuel 1:27 (KJV)