The Greek verb eimi is the fundamental verb of being — "to be, to exist." In the first-person singular present form (eimi = "I am"), it carries explosive theological weight in the Gospel of John, where Jesus uses the absolute ego eimi ("I AM") without predicate as a direct claim to the divine name of Exodus 3:14. With predicates it generates the seven great "I am" declarations of John's Gospel.
When Jesus said "Before Abraham was, I AM" (John 8:58), the crowd took up stones — they understood the claim perfectly. He was not saying "I existed" (emen) but eimi: timeless, self-existent being. The "I AM" statements of John's Gospel (bread of life, light of the world, gate, good shepherd, resurrection, way/truth/life, vine) each apply to Jesus the divine fullness of God's self-disclosure. Eimi is why John's prologue begins: "In the beginning was the Word, and the Word WAS with God, and the Word WAS God."