This book is dedicated to the Bride of Christ, and those who hear their calling to be part of the Bride! We who have chosen to be followers of Christ, often hear the Holy Spirit, but are not heeding. Our flesh gets in the way. The phrase "He who has an ear, let him hear what the Spirit says to the churches" appears multiple times in the Book of Revelation. The word Listen, is spoken multiple times in the book of Jeremiah. God wants us to Hear Him.
