παράκλητος

A. called to one's aid, in a court of justice : as Subst., legal assistant, advocate, D. 19.1, Lycurg. Fr. 102, etc.

2. summoned, δοῦλοι D.C. 46.20, cf. BGU 601.12 (ii A.D.).

II. intercessor, Ph. 2.520 : hence in NT, Παράκλητος, of the Holy Spirit, Ev.Jo. 14.16, cf. 1 Ep.Jo. 2.1.