RAV KOOK ON PARSHAS Bo PART 4: The Exodus and Tefillin

he Torah commands us to commemorate the Exodus from Egypt by wearing tefillin (phylacteries) on the arm and head. "These words will be for a sign on your arm and a reminder between your eyes, so that God's Torah will be in your mouth; for God brought you out of Egypt with a strong arm." (Ex. 13:9) What is the connection between tefillin and the Exodus? How does wearing tefillin ensure that the Torah will be 'in our mouths'?