Sam Hyeong Rae Jo (PhD, VU Amsterdam, 2023) is a pastor-theologian with a special interest in John Owen and the theology of the affections. He earned a BA in Theology from Moody Bible Institute, an MDiv and an MA in Historical Theology from Westminster Seminary California, and a PhD in Systematic Theology from Vrije Universiteit Amsterdam. His work explores how the Spirit transforms the believer’s heart in union with Christ. He writes and speaks on Reformed theology, Christian spirituality, and human flourishing. Sam is married to Miran, and they live in Seoul, South Korea.