Stellman served ‘as the chief prosecutor in the 2011 heresy trial of fellow Presbyterian minister Peter Leithart…’

 …a Calvinist writer and scholar known to readers of journals including First Things and Touchstone.

Leithart’s views were accused of being in line with a school of Presbyterian thought known as the “Federal Vision,” and he was tried for, among other charges, allegedly failing to distinguish justification and sanctification, divine law and divine grace, and teaching that baptism confers grace and divine adoption.

In short, Leithart was on trial for being too Catholic.

Although Stellman’s work as prosecutor was acknowledged as solid at the time, Leithart was acquitted by the Northwest Presbytery. In the time after this trial, however, Stellman himself began to question certain historic Protestant beliefs like sola scriptura and sola fide.