The Church of the Lord is built upon the rock of the apostles among so many dangers in the world; it, therefore, remains unmoved. The Church’s foundation is unshakable and firm against assaults of the raging sea. Waves lash at the Church but do not shatter it. Although the elements of this world constantly beat upon the Church with crashing sounds, the Church possesses the safest harbor of salvation for all in distress. There is a stream which flows down on God’s saints like a torrent. There is also a rushing river giving joy to the heart that is at peace and makes for peace.

St. Ambrose of Milan