To explain why He had chosen Peter.
...and That revelation, that confession was/is THE ROCK in the upon this Rock statement that Jesus refers to.
That is a common misinterpretation.
Sorry, the misinterpretation is yours. Jesus is the head of His church. He builds the church through the revealed truth that HE is the Son of God. A truth revealed by the Father through the Holy Spirit (not through Peter) to believers. The first absolute in a true church is a biblical understanding of Jesus Christ. Anything other than a biblical understanding of Jesus Christ means you don’t have a true church.
Look at John 6 where Jesus says “no one can come to me unless the Father (not Peter) has enabled him” He says this twice in John 6.
There is power in the word, you should read it.
Yeah, like the misinterpretation about Peter being the first Pope...