American Standard Version (ASV):
As thou knowest not what is the way of the wind, [nor] how the bones [do grow] in the womb of her that is with child; even so thou knowest not the work of God who doeth all.
King James Version (KJV):
As thou knowest not what [is] the way of the spirit, [nor] how the bones [do grow] in the womb of her that is with child: even so thou knowest not the works of God who maketh all.