The nave of Saint Peter's Basilica. (Nef de la basilique Saint-Pierre)-Written : 'TU ES PETRUS' (You are Peter /Rock) (Tu es Pierre)Around the base of the drum we can read the solemn words from Matthew's Gospel with which Jesus invests Peter with supreme authority. The text reads: 'You are Peter ('Rock') and on this rock I will build my Church;to you I will give the keys of the kingdom of heaven.'The gigantic black letters (2 m. high) of this text on a gold background are lit by the light from 16 large windows.(St Peter's basilica; basilique Saint-Pierre; Petersdom)Vatican; 2019.