"And Jesus said, I am: and ye shall see the Son of man sitting on the right hand of power, and coming in the clouds of heaven." (Mark 14:62)
After His arrest, "the chief priests and all the council sought for witness against Jesus to put him to death; and found none" (Mark 14:55). Then they got their sought-after witness from Jesus Himself when the high priest asked Him: "Art thou the Christ, the Son of the Blessed?" (v. 61), and it only took two words from Him. "I Am!"
As a matter of fact, this was not the first time He had thus identified Himself as the self-existent, eternal God. On an earlier occasion in Jerusalem, He had told the Pharisees: "I am the light of the world," and then, "I am from above: . . . I am not of this world. . . . If ye believe not that I am, ye shall die in your sins" (John 8:12, 23-24; the "he" in verse 24 is not in the Greek original).
He made this especially clear a few minutes later when He asserted: "Before Abraham was, I am" (John 8:58). But when He finally made this wonderfully truthful claim in the presence of the council, "they all condemned him to be guilty of death" (Mark 14:64). He had committed the capital crime of blasphemy in their opinion, by claiming to be God.
"I am" is, in fact, the very name of God. When Moses, at the burning bush, was called by God to deliver the Israelites from slavery, God said His name was "I AM THAT I AM" (Exodus 3:14). The name Jehovah (or Yahweh), the most frequently used name of the Lord in the Old Testament, is essentially this name.
One can count at least 196 "I am" claims of God in Christ ("I am the way, the truth, and the life," for example--John 14:6) in the Bible. Truly our Lord Jesus Christ is the eternal, self-existent God, "Alpha and Omega, the beginning and the end, the first and the last" (Revelation 22:13). HMM