The cause of the fire, which occurred on Sunday, Sept. 19, is still unknown.
Three historic LCMS congregations are rebuilding following catastrophic losses earlier this year.
An Aug. 7 fire in the basement of Our Savior Evangelical Lutheran Church, Indianapolis, caused an estimated $1 million in damage.
The suspect, in his early 20s and likely high on drugs when he set the fire, is still at large.
The main building of Grace Lutheran Church, Vestal, N.Y., is declared a total loss after a May 18 storm-related fire.
Although destruction by the Easter-day fire is limited and no one is injured, damage from smoke and water are widespread.