counsellor

1] a councilor, senator
2] a member of the Sanhedrin
derivation: from (1011)
http://bible1.crosswalk.com/Lexicons/Greek/grk.cgi?number=1010&version=kjv

(1011)
1] to deliberate with one's self, consider
2] to take counsel, resolve
derivation: from (1012)
http://bible1.crosswalk.com/Lexicons/Greek/grk.cgi?number=1011&version=kjv

(1012)
1] counsel, purpose
derivation: from (1014)
http://bible1.crosswalk.com/Lexicons/Greek/grk.cgi?number=1012&version=kjv

(1014)
1] to will deliberately, have a purpose, be minded
2] of willing as an affection, to desire
derivation: middle voice of a primary verb
http://bible1.crosswalk.com/Lexicons/Greek/grk.cgi?number=1014&version=kjv

Additional information:
1] "The ancient Jewish court system was called the Sanhedrin."
2] "Tannaitic sources describe the Great Sanhedrin as a religious assembly of 71 sages who met in the Chamber of Hewn Stones in the Temple in Jerusalem."
3] "The Great Sanhedrin met daily during the daytime, and did not meet on the Sabbath, festivals or festival eves."
4] "The Sanhedrin judged accused lawbreakers, but could not initiate arrests."
http://www.jewishvirtuallibrary.org/jsource/Judaism/Sanhedrin.html

Comment:
Contemplation of item 1 of the additional information leads to the conclusion that the Sanhedrin was the equivalent of a State Supreme Court in the US. Joseph of Arimathaea was therefore the equivalent of a State Supreme Court Judge. His high status was probably the reason that he was able to successfully beg the body of Jesus from Pilate. Contemplation of item 4 leads to the conclusion that Jesus-Holy Ghost was not arrested by the Sanhedrin, it not having the power to arrest. Contemplation of items 2 and 3 leads to the conclusion that Jesus-Holy Ghost was not judged by the Sanhedrin, it not meeting on the eves of festivals or during festivals. Further contemplation of items 2 and 3 leads to the further conclusion that Jesus-Holy Ghost was not judged by the Sanhedrin for the additional reason that Jesus-Holy Ghost was taken to the palace of the high priest, not to the meeting place of the Sanhedrin which was the Chamber of Hewn Stones in the Temple complex.

A link to each occurrence of this word in the homepage:
1] counsellor