Straight to the Heart of Hebrews & James, STTH by Phil Moore and published by Monarch Books.
Hebrews addresses Jews who were in a dangerous position: a wave of persecution had caused many of them to drift back to the Jewish synagogues. The writer warns them that they are turning their backs on the gospel. Having started out with Jesus, they have started to side with the Sanhedrin who crucified Him.
The book of James addresses Jews who understood and believed the Christian gospel but were tempted to compromise on lifestyle. James is very practical, spelling out how Jesus shows us a better way of living.
Straight to the Heart of Hebrews and James is part of a series of devotional commentaries that allows people to come to grips with each book of the Bible one bite at a time. Each book contains 60 punchy and relevant chapters, crammed with fascinating and accessible scholarship.