picture from The Incredible Machine, published by National Geographic, 1986
"The LORD ... opened her womb." - Genesis 29:31
"... and the LORD enabled her to conceive, and she gave birth to a son." - Ruth 4:13
"... the LORD had closed her womb." I Samuel 1:5
It is God who has the power over the womb, He who opens or closes it. He knows us from the before our earliest moments, it is He who directs the coming into being of life.
"Praise be to God and Father of our Lord Jesus Christ! In His great mercy He has given us new birth into a living hope ..." - I Peter 1:3
Not only does He give us physical life, He brings us into spiritual life as well. How mighty is our God!