Thread: When Jesus Christ told Peter to build His church upon this rock why did they

leave Israel and go to Rome? And build it in Rome 300 years later under the reign of Constantine?

The "church" is the universal body of believers and followers of Christ, it is not an organization situated in a particular city or country. It has no finite location, it is everywhere.

Because it was all make believe.

Christ told Peter to build His church upon Himself, that is Christ, the Word of God. The word for Peter used means a little pebble, where the word used for "rock" would be better translated as mountain of solid rock.