from
Easton's 1897 Bible Dictionary
Annas
was high priest A.D. 7-14. In A.D. 25 Caiaphas, who had married
the daughter of Annas (John 18:13), was raised to that office,
and probably Annas was now made president of the Sanhedrim, or
deputy or coadjutor of the high priest, and thus was also called
high priest along with Caiaphas (Luke 3:2). By the Mosaic law
the high-priesthood was held for life (Num. 3:10); and although
Annas had been deposed by the Roman procurator, the Jews may
still have regarded him as legally the high priest. Our Lord was
first brought before Annas, and after a brief questioning of him
(John 18:19-23) was sent to Caiaphas, when some members of the
Sanhedrim had met, and the first trial of Jesus took place
(Matt. 26:57-68). This examination of our Lord before Annas is
recorded only by John. Annas was president of the Sanhedrim
before which Peter and John were brought (Acts 4:6).