Father Brendan Flynn: You haven't the slightest proof of anything!What does that mean for doubt. Some doubt is unbelief which isn't approved by the Bible. But, it means that some doubt is different to that, it's a category we might use to speak of the questions we can ask in the context of trust and relationship. We know that God is there and is trustworthy - the gospel tells us this. Being caught up into the Triune life though doesn't mean I won't have questions. The Psalms are illustrative of this.
Sister Aloysius Beauvier: But I have my certainty!
There are implications in this for our doctrine of church. If the church is to relationally reflect her God then it should be a place of trust and relationship, and that means we can ask questions, work through issues, live in mess. The alternative is a dogmatic confidence in certainty (Arianism?), rather than robust relationships that can take questions. Are you participating in a Triune Community - a place where there can be room for questions and relationship, trust and care? Do you give people space to have questions, to air them, to ponder them, to work them through, to listen and not necessarily answer immediately, to feel the difficulties and tensions?