O people ! if you are in doubt about the raising , then surely We created you from dust , then from a small seed , then from a clot , then from a lump of flesh , complete in make and incomplete , that We may make clear to you ; and We cause what We please to stay in the wombs till an appointed time , then We bring you forth as babies , then that you may attain your maturity ; and of you is he who is caused to die , and of you is he who is brought back to the worst part of life , so that after having knowledge he does not know anything ; and you see the earth sterile land , but when We send down on it the water , it stirs and swells and brings forth of every kind a beautiful herbage .