BUENOS AIRES, Argentina/GENEVA | 5/3/2021 Evangelical Church of the River Plate Vice President Karina Arntzen. Photo: LWF/E. Albrecht Voices from the Communion: Ms. Karina Arntzen (LWI) - The daughter of a Yerba Mate tree farmer and a primary school teacher, Attorney Karina Arntzen is the first layperson to serve as vice president of the Evangelical Church of the River Plate (IERP), and the second woman ever elected to the office since the church’s independence in 1965. Before she was elected vice president in November 2020, she served six years as secretary on the board, served many years in youth ministry and taught confirmation and catechism classes.