“Annas and Caiaphas being the high priests, the word of God came unto John the son of Zacharias in the wilderness.”
King James Version (KJV)
3:2 Annas being high priest, and Caiaphas - There could be but one high priest, strictly speaking, at once. Annas was the high priest at that time, and Caiaphas his sagan or deputy.
Lu 3:2 Annas and Caiaphas being the high priests. The Jews recognized but one high priest, who held his office for life, but Annas was removed from the office by the Roman governor, Pilate, and his son-in-law, Caiaphas, appointed in his place. Hence, both were called high priests at the same time. The word of God came unto John. He was called to begin his work.