This commentary on The Letter of Jude engages the Greek text and is designed for pastors, theological students, and lay readers. Jude, a brother of Jesus, warns members of the early Jesus movement against intruders in their midst and exhorts those believers not to deviate from the fundamental tenets of “the faith” in behavior and belief. The Letter of Jude is highly relevant to Christians in the twenty-first century. Even many of those now calling themselves evangelical have abandoned any pretence to adhering to biblical doctrines. This commentary seeks to emphasise Jude’ message: contend for biblical truth, and live so that the Gospel of our Lord Jesus Christ is alive, true, and liberating.