13 For thou hast possessed my reins: thou hast covered me in my mother's womb.
14 I will praise thee; for I am fearfully and wonderfully made: marvellous are thy works; and that my soul knoweth right well.
15 My substance was not hid from thee, when I was made in secret, and curiously wrought in the lowest parts of the earth. (KJV)
Slideshow source: http://www.scribd.com/doc/26114965/Development-of-Human-Life-Fetus-In-Utero-Pictures-of-Baby-in-the-Womb-from-Conception-to-Birth-Prolife-Overview-Abortion-Laws-in-the-USA