DEUT277 Put tefillin on one's head. As to why these four particular passages, as opposed to others, are inside our tefillin, these deal with accepting Heaven’s kingship and the One-ness of Hashem. So, too, there are verses about the Exodus from Egypt, the decisive factor behind belief that the world was created, and that its Creator is involved with all that He made and watches over the entire creation at all times. These concepts are central to the Jewish religion. Therefore, our Maker commands us to place these fundamental principles between our eyes and next to our hearts every day, for these two parts of the body are where our intelligence and powers of perception dwell. By laying these principles as a remembrance on these places, we become more firmly attached and more firmly committed to these principles. We also become more conscious of Hashem's ways, and thereby merit eternal life.