Abu Ismael starts off by quoting Surah Nisa Ayah 65 in order to make the connection between iman and hukm (life's affairs) and showing it is the greatest of matters since Allah has taken the oath upon Himself on this matter.
He then explains working for Islam as a solution to life's affairs in terms of comparing it with other systems (e.g. the 'aqeedah of secularism) and Allah warning about this in terms of tawheed rububiyyah.
The brother then makes parallels in the times of the seerah, what the concept of 'worship' actually is in Islam and how it relates to us today
He then explains Surah Baqarah Ayah 85 and differentiates between the purpose of mankind and the objective of Islam itself.