Why is 'I am' significant in Jesus' teachings?

'I am' is a pivotal declaration made by Jesus throughout the Gospel of John and encapsulates His divine identity. In John 8:58, when He states, 'Before Abraham was, I am,' He relates Himself to God's name revealed at the burning bush in Exodus 3:14. This connection is significant because it affirms His eternal nature, underscoring that He is not merely a prophet or teacher but God incarnate. In Reformed theology, this claim is foundational, as it means that Jesus possesses the authority to save, judge, and sustain His creation. His use of 'I am' in various contexts (e.g., 'I am the light of the world,' 'I am the bread of life') also highlights His role as the sustainer and life-giver, central to the faith and salvation of believers.