The Christian community in Lahore were reportedly outraged when a man ripped up a copy of the Bible at the church gates last Friday.
But Lahore's Archdiocesan Vicar General Andrew Nisari used his address to the Lahore church's congregation to call for calm.
"Promise me you won't riot," he said. "Promise you won't fight. It is another trial for Christianity in Pakistan. Be patient in suffering and follow the passion of Christ."
The retired Archbishop of Lahore, Lawrence Saldanha, urged Christians to leave the state legal system to deal with the suspect – though he did express concerns over what he saw as "growing anti-Christian sentiment".