Why didn't Matthew, a disciple of Jesus, record any of the 'I AM' sayings found in John's Gospel, and what does this say about their authenticity?

The question assumes that the authenticity of the Gospels is contingent upon their uniformity. However, the Gospel writers had unique perspectives and theological emphases. Just because Matthew does not include the same material as John does not mean he was unaware of it or that it lacks authenticity. In fact, Matthew's Gospel contains an 'I AM' statement when Jesus walks on water, demonstrating His divine nature. This indicates that Matthew was indeed aware of the significance of Jesus' identity as the 'I AM' and chose to present it in a different context. Furthermore, the differences in the Gospels serve to complement one another rather than contradict, enriching our understanding of Jesus' life and mission.