My dad says it is the statement of his faith as well.
I read this verse recently
For who is God, except the Lord?
And who is a rock, except our God?
Atleast this proves even if the pope is sincerly trying to please God and even if he has more wisdom than the others he is not infallible and we can't trust men alone for our salvation. For the next verse says
"It is God who arms me with strength,
And makes my way perfect"
Orthodox confession and apostolic succession go together, you cannot separate one from the other, that however doesn't mean some clergy cannot lose succession by becoming a heretics as history has shown.
If you try to separate apostolic succession from orthodox confession, you might end up with something like invisible Church or branch theory type of heresy. Protestants will love that, the lawless, self-authorized pastors like to claim the apostolic church to be in error and that they know better...
So in order for Christ's Sentence "And the gate of hell will not prevail against it (the Church)" to make sense, The Church must be build upon the orthodox confessing priesthood, which is visible and available throughout all ages, until the end of the world.
The said above doesn't mean however that Christ is not the Rock, The rock is Christ and consequently every Orthodox bishop. Let me demonstrate through the gospel:
This is what Christ told to the twelve:
The one who hears you hears me, and the one who rejects you rejects me, and the one who rejects me rejects him who sent me.
- luke 10-16,
"Truly, truly, I say to you, whoever receives the one I send receives me, and whoever receives me receives the one who sent me.
- John 13:20
Whoever receives you receives me, and whoever receives me receives him who sent me.
- Mathew 10:40
Then the twelve, went out to preach the gospels to all nations, ordaining clergy and giving them this authority
(the link is a demonstration of consecration of a bishop)
St Ignatius of Antioch, illuminated by the Holy Spirit, Explain to us this authority
My favorite quote from him -See that you all follow the bishop, even as Jesus Christ does the Father, and the presbytery as you would the apostles; and reverence the deacons, as being the institution of God. Let no man do anything connected with the Church without the bishop. Let that be deemed a proper Eucharist, which is [administered] either by the bishop, or by one to whom he has entrusted it. Wherever the bishop shall appear, there let the multitude [of the people] also be; even as, wherever Jesus Christ is, there is the Catholic Church. It is not lawful without the bishop either to baptize or to celebrate a love-feast; but whatsoever he shall approve of, that is also pleasing to God, so that everything that is done may be secure and valid.
- St Ignatius of Antioch