Catholicism is a lie. Well, if I were to chose one, it would have to be the claim that Peter is the rock upon which Jesus built His church.
The vatican church in Rome itself is built 'upon' Apostle Peter's grave. Can you see how the Roman catholic church was 'physically' built upon Apostle Peter's grave, the rock, as to in a way, seem to fulfill the justification of CHRIST.
But please do not be deceived by that, because we need to understand the knowledge of the Holy Scripture in the HOLY BIBLE and perform them 'spiritually'.