In deference to today's feast, here's the "Tu es Petrus" motet of Giovanni Pierluigi da Palestrina. (Interestingly, he also wrote a Missa "Tu es Petrus," which is gorgeous.)
Tu es Petrus
et super hanc petram aedificabo ecclesiam meam
et portae inferi non praevalebunt adversus eam.
Et tibi dabo claves regni caelorum.
Quodcumque ligaveris super terram,
erit ligatum et in caelis,
et quodcumque solveris super terram,
erit solutum et in caelis.
Et tibi dabo claves regni caelorum.
You are Peter,
And upon this Rock I will build My Church:
and the gates of hell shall not overcome it.
And I will give you the keys to the kingdom of heaven.
Whatever you bind upon earth
shall be bound in heaven,
and whatever you release upon earth
shall be released in heaven,
and I will give you the keys to the kingdom of Heaven.
Attribution(s): "Peter's Chair" (source) is in the public domain via Wikipedia; "Bell Tower" (source) via CC BY-SA 4.0.