Lee County Sheriff Daniel Simon also attended services at the church and is struggling to come to grips with what happened.
The organ and the interior of the "Pearl of Kiev" were damaged.
Church fires are becoming dangerously common across Western Europe
Pastor Pawlowski posted a video footage of firefighters working to extinguish the flames on YouTube
Regardless of their own safety and with zero visibility, they pulled out babies left in thick smoke.
Ontario is a territory where Catholic churches are regularly closed and sold due to the decline in the number of faithful.
Police said the fire started at the back of the building, on the river side. The cause of the fire, however, is still unknown.