This book is a study of the epistle to the Hebrews. Because the human author of this epistle is unknown, we understand it to be a direct communication to us from God! The main subject of this book is the Son of God, the Lord Jesus Christ. Throughout the epistle, He is described in great detail in His many functions as Son of God, Son of man, Great High Priest after the order of Melchisedec, Savior, Redeemer, and Sustainer of the world.