A series of lectures in which the lecturer explains the Three Principles. It is a brief valuable message includes the principles that the human should know which are as following: (1) Knowing Allah and types of worship He ordered, (2) Knowing Islam, its levels, and the pillars of each, and (3) Knowing Prophet Muhammad, summary of his biography, and the wisdom of his mission. In addition, it explains the belief in resurrection and the two pillars of monotheism: Disbelieving in idols and believing in Allah.