On Ecclesiology: Foundations (Part 1 of 2)

⁣On the foundation of the Church. What did Our Lord mean when in Matt 16:17-19 He spoke to St Peter & named him 'the Rock'. Why is this rock important? Any significance to it? Why did Our Lord do this? For more please go to http://www.romans10seventeen.org & remember to say 3 Hail Marys for the priest