After these verses have spoken to us regarding the origin of the creation, He (swt) continues speaking about the essentials of life and the things that sustain it.
Allah (swt) wills to turn the attention of the human being to the source of his strength, the elements of his life and the strength and guardianship of his God. His God has given him life and provided him with what was necessary to maintain it.
Then, Allah (swt) explains to the human being how his food comes to him through stating the stages that it passes through before finally reaching him. He says: