Acts 22:5

As also the high priest doth bear me witness, and all the estate of the elders: from whom also I received letters unto the brethren, and went to Damascus, to bring them which were there bound unto Jerusalem, for to be punished.

As also the high priest (still alive, it seems) doth bear me witness, and all the estate of the elders - the whole Sanhedrim (cf. , Gr.); a powerful appeal this:

From whom also I received letters unto the brethren (in the Jewish Faith), and went to Damascus, to bring them which were there bound unto Jerusalem, for to be punished.