In this episode, Deacon Magic and Caleb discuss soteriology and Calvinism. This is a lengthy episode and they also pay attention to an article which criticized Deacon Witlouw's comments on Romans 9.
To understand more on Romans 9, here are some recommendations:
(1) Fr. Patrick Henry Reardon's Commentary on Romans (Romans: An Orthodox Commentary)
(2) St John Chrysostom's Homilies on Romans (Public Domain)
(3) Craig Truglia's blog posts on patristic exegesis of Romans 9
(https://orthodoxchristiantheology.com/2020/08/31/the-patristic-exegesis-of-romans-91-13/) (https://orthodoxchristiantheology.com/2020/09/16/the-patristic-exegesis-of-romans-914-33/)
(4) The Rt. Rev. Dr. NT Wright's book "Justification: God's Plan and Paul's Vision"