One of the greatest claims of the New Testament is that Jesus of Nazareth is fully divine. Understanding what the New Testament reveals about Jesus is one of the most important things a Christian should understand. In this book, Richard Bauckham develops a "Christology of divine identity" that brings clarity to Second Temple Judaism's understanding of monotheism and includes Jesus in the unique identity of Israel's God.
I highly recommend this resource for all Christians and any serious student of Christology.
For a less scholarly, easier approach to Christology, I'd first recommend Putting Jesus in His Place by Robert Bowman.