Conversation so far:
What has a Rock have to do with Saint Peter?
Jesus then declares: Blessed are you. And I tell you that you are Peter, and on this rock I will build my church.
What else is interesting about Saint Peter besides Jesus declaring Peter blessed and building the church?
A common view of Peter is provided by Jesuit Father Daniel J. Harrington, who suggests that Peter was an unlikely symbol of stability.
Is Saint Peter as a symbol of stability still being used?
In the Eastern Orthodox Church this passage is interpreted as not implying a special prominence to the person of Peter, but to Peter's position as representative of the Apostles.

Question: Did he do anything during this time?
Self-contained rewrite: Did Saint Peter do anything during the time as an Apostle?