More than 50,000 Catholics from across the United States are set to arrive in Indianapolis this week for the church’s first national gathering in more than 80 years, marking one of the most significant religious events the city has ever hosted. The National Eucharistic Congress, scheduled for Wednesday through Sunday at the Indiana Convention Center and Lucas Oil Stadium, will feature church services, speakers, presentations, religious sacraments, exhibitions, concerts and live podcasts. As mainstream religions continue to lose followers, this event will be laser-focused on one of Christianity’s foundational sacraments—the Eucharist, otherwise known as Holy Communion or the Lord’s Supper. It also will stage one of the most conspicuous outdoor public gatherings in Indianapolis’ recent history, outside of the Speedway: a mile-long procession through downtown that could be attended by as many as 50,000 people. Our guest this week is Ken Ogorek of the Archdiocese of Indianapolis, who discusses the revival and purpose of the Eucharistic Congress after an 83-year absence. We also hit on the ways this event is different from many of the religion conferences and annual meetings that Indianapolis hosts and how local organizers are providing accommodations for participants with a variety of needs. And we delve into how church leaders will evaluate the impact of the congress once the attendees are gone.