The twelfth holidays, dedicated to the most important events in the earthly life of the Lord and the Mother of God, are the center of the liturgical life of our Church. The texts of the services of these days are filled with reflections on the mystery of the economy of our salvation, which means they teach us the most important thing - faith in God, hope in Him and love for Him. This book will help everyone who wants to deeply experience the worship of the greatest church holidays and better understand the meaning of events sacred history. Recommended for publication by the Publishing Council of the Russian Orthodox Church.