"Brothers and sisters," the seminary instructor tells his class, don't believe in God because of your parents' beliefs but because "you know why God exists."
The challenge spurs a discussion about beliefs. But more than Imam Mohammad Qazwini's interesting delivery, deep understanding of Islam and his formal training at a seminary in the holy city of Qom, Iran, have drawn them to this suburban Detroit classroom just off the large prayer room of a mosque.
He speaks their language — literally.
An increasing number of US Muslims want guidance from religious instructors who they can understand linguistically and culturally.
The Quran, Islam's holy book, is written in classical Arabic, but many of the students aren't well-versed in the language. Qazwini navigates the intricacies of Arabic effortlessly — in everyday English, they use, opening a door for many of the students and meeting an increasing need.
Traditional imams and scholars who once came from the Middle East or were educated in schools there are having more difficulty entering the United States.
The Trump administration imposed a travel ban in January 2017 on people from several Muslim majority countries, and the government has made it harder to enter the US entirely, with more rigorous interviews and background checks.
"In many other states, there are mosques with no ... functional imam, who can assume the responsibilities of the religious leader or even speak," said Islamic Institute of America leader Imam Hassan Qazwini, who started the seminary with his son.
"I thought maybe a long-term solution for facing this shortage is to have our own Shiite Islamic seminary in the US, instead of waiting for imams to come," he said.
Al-Hujjah Seminary is the newest of several seminaries focused on the Shiite branch of Islam in the United States and Canada working to address a shortage of leaders.
The seminary started in fall 2017 with about 35 registered students. Now it has nearly 400, with some attending in-person, others watching live and still more watching recorded videos online. In addition to the Qazwinis, there are four other instructors.
Although there are students in 25 countries the emphasis is on North America because of the desire to deepen the bench of US-trained imams, scholars, and speakers, according to the elder Qazwini, a native of Iraq.
In a class on a recent evening, the younger Qazwini led an intense session on faith, proposing case studies, playing devil's advocate and prompting a philosophical back-and-forth with his students. His execution is informal but authoritative. The students understand him.
"I need to make sure he speaks the language, he's knowledgeable, he's respectful, he's truly caring and he's trying to adapt to the country we live in," said Alia Bazzi, 32, a graphic designer and seminary student. "Why would my imam speak Arabic if we live in America and the main language we speak in English? ...
I want to know he's up to date, he knows what's going on."
About an hour's drive south, in Toledo, Ohio, the Ahlul Bayt Center mosque has been running for about four years without a full-time imam. Imam Mohammad Qazwini and other clerics travel there for services and special events.
Dr Ali Nawras, a board member of the Toledo mosque, said the arrangement works for day-to-day needs because of its proximity to the Detroit area — a longtime hub for Islam in America. But the centre seeks a permanent imam to meet its broader, long-term objectives: Having a strong understanding of challenges within their own community, particularly among youth, and forging stronger bonds between the Muslim and non-Muslim populations.
"On one hand, you can find an imam who is very knowledgeable, very strong background in theology, but that person might not speak English or might have lived most of his life outside the country," Nawras said. "On the other hand, you might find someone who is born here and educated here, but they don't have a good or strong theology background."
"To have a combination of both, that is where the challenge comes," he added.
Qazwini wants to expand the curriculum, faculty, and enrollment at Al Hujjah but another important step for the seminary is pursuing accreditation so it can award official degrees rather than completion certificates. In the meantime, he has spoken with other established schools offering Islamic studies about collaborating on accreditation.
Zaytuna College in Berkeley, California, was founded in 2009 and is the first accredited US-based Muslim college, but it focuses on the Sunni branch of Islam. Overall, Sunni is the largest sect of Islam and Shiite the second-largest.
There are nearly two dozen other institutions across the United States offering varying levels of post-secondary degrees in Islamic scholarship. Most are also Sunni-based and are in the process of seeking accreditation.
For Ali Ghazala, 22, the purpose of attending the Michigan seminary is to gain a greater understanding of his faith so he can better represent it around those who don't practice or understand it.
"It is vital that if you are a Muslim growing up in the West interacting with non-Muslims that you present to them the correct religion," he said. "I have to be the one who is certain before I can go to other people and explain to them why I am the way I am or why we are the way we are."