There is recorded in the Gospel of John chapter 8 the words of the Lord Jesus which were addressed to many children of Israel: “When ye have lifted up the Son of man, then shall ye know that I am” (vs.28). The “I AM” here has the same meaning as the “I AM” found in Exodus 3. Jesus did not say “I was” nor did He say “I am to come”; He said “I AM”—that is to say, “I NOW AM.” He thus indicated that He is God, that He is the God of Now. When the Jews disputed Him on this point by saying “Thou art not yet fifty years old, and hast thou seen Abraham?”, the Lord answered with these words: “Verily, verily, I say unto you, Before Abraham was born, I am” (vs. 57 & 58).
Upon hearing this statement the Jews took up stones to cast at Him. And why? Because the “I AM” which the Lord uttered here was precisely the same “I AM” He used in the preceding remark recorded in verse 28. Now the Jews fully understood the import of this “I AM”; and hence they took up stones to cast at Him.
On another occasion, at the time when the Jews tried to seize the Lord, they went backward and fell to the ground when He said to them “I am” (John 18:6). For the Lord Jesus is the God “I AM”; and when such a God as this comes forth, men cannot but fall backward to the ground.
He is the Alpha and Omega; He is the "I NOW AM." He is the Great "I AM." Jesus is all and in all...I'm made humble to gather that all in! Praise His Name!