Constantine R. Campbell (PhD Macquarie University) is Professor and Research Director at the Sydney College of Divinity. He is also a highly regarded jazz saxophonist and is a visiting instructor at The Australian National University School of Music.  He has authored and co-authored several books, including Paul and Union with Christ (Zondervan, 2012), Paul and the Hope of Glory (Zondervan, 2020), and PNTC: The Letter to the Ephesians (Eerdmans, 2023).