The Aramaic surname Bariōna means 'son of Jonah' (or 'son of John'). It appears only in Matthew 16:17, where Jesus addresses Simon Peter: 'Blessed are you, Simon Bar-Jonah, for this was not revealed to you by flesh and blood, but by my Father in heaven.' This surname grounds the great apostle in his ordinary human heritage before the extraordinary divine revelation he received.
The moment Jesus calls Peter 'Bar-Jonah' is the same moment He declares him 'the rock' on which the church will be built. The foundation of the church is not a superhuman hero but a flesh-and-blood son of a fisherman, upon whom God supernaturally revealed truth. The church is built not on human genius but on divinely-revealed confession: 'You are the Christ, the Son of the living God.' Human name, divine revelation, eternal mission.