How do Bernini's piazza and colonnades in front of Saint Peter's reiterate the message of the Catholic Church during the Counter-Reformation?

Bernini's Piazza and colonnades in front of Saint Peter's reiterate the message of the Catholic Church during the Counter-Reformation by symbolizing the arms of the church.

Explanation:

Both Bernini's Piazza and colonnades in front of Saint Peter's represent the open arms of the church.

The arms are always open for believers to come find sanctuary in according to the rhetoric prevalent in the counter revolution days.

Colonnades are usually the arched passageways formed under a strong upper level of which the arches are drawing down from the wight and the colonnade thus forms a passageway of the arches.

These colonnades follow the shape of two arms that are welcoming the people coming into the church.