That his son in law Caiaphas was the high priest that year; which we had also before, 1 Thessalonians 11:51, where we discoursed more largely about the disorder of the Jews, in that most corrupt time, when that place was bestowed without regard to the family of Aaron, and bought and sold, or conferred at the will of their conquerors. See Poole on "1 Thessalonians 11:51".
Related Commentaries of John 18:13
John 18:13
13 And led him away to Annas first; for he was father in law to Caiaphas, which was the high priest that same year.a