This book provides a significant contribution to the ongoing debate about the nature of Jesus's divinity, offering a fresh perspective on the development of early Christology. The notion that Jesus was merely a mortal who was divinely adopted at his baptism or resurrection, a theory known as Adoptionism, has long been touted as the earliest explanation for Jesus's divine status. However, in this groundbreaking work, Michael Bird boldly challenges this prevailing view by meticulously examining pre-Pauline materials, the Gospel of Mark, and patristic sources. Through a critical engagement with prominent scholars, including Bart Ehrman and James Dunn, Bird convincingly demonstrates that a fully articulated adoptionist Christology did not emerge until the late second century. By re-examining oft-cited passages, such as Romans 1:3-4 and the speeches in Acts, Bird persuasively argues that early Christology was, in fact, rooted in incarnation, not adoption. The book concludes with a critical assessment of modern theological examples of adoptionism, providing a significant and timely contribution to the ongoing debate about Jesus's divinity. Bird's fresh perspective on the development of early Christology is a game-changer in the field.