The most clear statement regarding the call to God and the command

Translation

This book, by Sheikh Abdul Aziz bin Abdullah Al-Rajhi, deals with the subject of calling to God, enjoining good and forbidding evil, and reviews the origins of this duty and its importance in Islam. The author focuses on explaining the meanings of good and evil linguistically and legally, and points to the legal evidence that urges this duty and threatens those who neglect it. The book also addresses the conditions for the obligation of enjoining good and forbidding evil, and discusses the effects of violating this duty on the individual and society.