a team of scholars, ministers, and support staff




Simon Brace

Simon is the National Director of Ratio Christi South Africa and also serves as the Chapter Director at the North West University in Potchefstroom. Born in Zimbabwe, Simon moved to South Africa where he completed his matric and gained a diploma in Land Surveying from Durban University of Technology. Simon also holds a BA in Theology and MA in Apologetics and Philosophy from Southern Evangelical Seminary. Simon was also involved with the founding and establishment of Ratio Christi while working at Southern Evangelical Seminary (SES) and has served as the President and Chairman of the Board of Ratio Christi. He is currently a Ratio Christi Board member.




Nel Brace

Nel Brace grew up and matriculated in Northern KwaZulu-Natal. After completing her undergraduate studies at the University of Stellenbosch, she taught in London for six years. She completed a Master’s degree at Southern Evangelical Seminary (SES) in the USA and now serves on the national staff of Ratio Christi South Africa. Through this work she strives to be a witness to those who do not know Christ and to be part of the resurgence of Christian thinking on university campuses and in the church at large. She is married to Simon Brace and they have 5 children – Eva, Olivia, Cai, Jannes and Ruben.



Pretoria and Centurion

Karnu Van Heerden

Karnu began his studies in 2013 where he spent his first year at the Africa School of Missions in Mpumalanga, hereafter he moved to Potchefstroom to complete the rest of his studies. He holds a Bth in Church planting, Hons BA in Theology and Masters in Theology (Missionary Apologetics) from the North West University Potchefstroom Campus. Potchefstroom. His Master’s thesis deals with the importance of logical argumentation and rational justification of belief in evangelism. Furthermore, he has served at the Potchefstroom chapter of Ratio Christi since 2014. As of 2023 he has now moved to Pretoria to assist in the mission of Ratio Christi.


Daniël Maritz

After school, Daniël pursued his studies in theology at the North West University in Potchefstroom. In 2015 he started his masters degree on the New Age movement’s infiltration of the church and consequently enrolled for a Ph.D. in theology which he completed in 2020. He is a tentmaking minister at the Reformed Church Brooklyn in Pretoria and the manager of the NP Van Wyk Louw centre at Akademia University. He established the Ratio Christi chapter at the University of Pretoria in 2018 and wants to help the church retrieve the correct relationship between faith and reason. He is married to Ansie who is a lecturer in linguistics and they have one son named Gerdus.



Cape Town

Mathabo Baase

Mathabo Baase grew up and matriculated in Klerksdorp, North-West province into a family that practiced Ancestralism. She earned her Bachelor of Arts’ degree in Law and Psychology; Bachelor of Laws degree and Masters in Comparative Child Law degree from the North-West University (NWU) in Potchefstroom, South-Africa. At the NWU Mathabo served as chapter president of Ratio Christi. She also served as a group facilitator & mentor at Dokima, the teen ministry division of Duet Gemeente and in various other teen-leadership development programs. Upon graduating from NWU she went on to obtain a Certificate in Theology and Apologetics from the Oxford Centre for Christian Apologetics (OCCA) and Wycliffe Hall, University of Oxford. She is currently a Private law lecturer and PhD candidate at the University of Cape Town, South Africa.


Carl-Johan Altin

Carl grew up in Pretoria and moved to Cape Town in 2018. He was raised in a Christian home but, from a young age, had questions about reality and how Christianity fit into that. Through apologetics his faith was strengthened and this gave him confidence to communicate the Gospel message. He studied at the University of Pretoria where he earned a Bachelor of Commerce in Econometrics and is also a member of the Actuarial Society of South Africa.




Jonathan De Beer

Jonathan De Beer is a full time missionary for Ratio Christi and is piloting Ratio Christi College Prep in South Africa. He is also the chapter director at the University of Kwa-Zulu Natal (UKZN) in Pietermaritzburg. Jonathan was a pastor at Pietermaritzburg North Baptist Church from July 2014 – May 2018. Jonathan also has some experience in overseas missions as he and his wife, Deidre, spent nearly three years in China serving the Lord there. Jonathan studied Theology at the Baptist Theological College in Johannesburg and is currently working on his masters degree in Apologetics from Southern Evangelical Seminary (SES) in the USA.



Fiso Mazibuko

Born and raised in KwaZulu-Natal. After he matriculated Fiso went to UKZN Pietermaritzburg to study Law. While a student there, he joined and led an on-campus ministry called Campus Connect from 2018-2022. It was during this time that Fiso encountered Ratio Christi PMB and started attending their chapter meetings. He grew to love apologetics and later saw a need to commit to Ratio Christi and partner with them. Currently, he is assisting Jonathan De Beer in running the PMB Chapter.

National management

Roald Rodseth

National Coordinator

Roald has spent his secular life in the engineering field. He attained a BSc. Electrical Engineering (Light Current) from the University of KwaZulu-Natal, Durban, South Africa. He worked at Arcellor Mittal for 22 years where he was involved in plant maintenance engineering. Following that he spent 24 years managing a micro enterprise in the same field. In addition to this he was a member of the Gideons International where he served terms of office at national and international level. During this time he played a role in developing the management function of the association in Zambia and Ghana. Roald is married to Lydia and they have two married son and four grandsons. He is currently the National Management Coordinator for Ratio Christi.


Lydia Rodseth

National Administrator

Lydia was born in the Netherlands. At the age of 16 she emigrated with her parents to Amanzintoti in South Africa. She trained as a pre primary and primary school teacher and later did further training in remedial education.
She married Roald Rodseth in 1975. They have 2 married sons and are the proud grandparents of 4 grandsons. Lydia served for many years as a Life Line counsellor. She also served on and presided over the Board of the Jeugland Old Age home in Vanderbijlpark for 15 years. Lydia and Roald were members of the Gideons International in South Africa for 43 years. There she served as national president of the Gideon’s wives for two terms of three years. Currently she is the national administrator for the South African Ratio Christi Board.


Advisory Board Members

Reitze Rodseth

Reitze Rodseth is an anaesthesiologist and critical care specialist working with Jones, Bhagwan and Partners in Pietermaritzburg, South Africa. He is affiliated to the Perioperative Research Group of the Department of Anaesthetics and Critical Care at the University of KwaZulu-Natal (UKZN) where he is an Associate Professor.  He has been serving as the chapter director of Ratio Christi at UKZN Pietermaritzburg since 2017. He has published more than 100 peer reviewed papers and was awarded the 2016 UKZN Vice-Chancellor’s Research Award. He is currently busy with a masters in Christian Apologetics and Philosophy from Southern Evangelical Seminary (SES), North Carolina, USA. He is married to Miranda and has two sons – Joshua and Nathan.


Become a Chapter Director

Do you want to help students love God with all their hearts and minds? You don’t have to be an expert theologian or profesional philosopher to join Ratio Christi.

Find out more about leading a chapter at a local university by clicking below.


Make a Difference: Donate

You can help Ratio Christi to expand its work to every campus in South Africa and to be able to provide quality resources and training for Christian students. 

Even a few rands will help our Chapter Directors to spend more time in the field sharing Christ with university students.