Mfariji au Mtetezi au Msaidizi ni tafsiri ya neno la Kigiriki παράκλητος, parakletos (kwa Kiingereza "Paraclete" na kwa Kilatini paracletus) lililotumiwa na Yesu Kristo kadiri ya Injili ya Yohane (14:15-27). Wakristo toka mwanzo wameona kuwa linamhusu Roho Mtakatifu kama njia ya Yesu kuendelea kuwepo kati ya wanafunzi wake baada ya kufa na kufufuka Waislamu wengi wamejaribu kuonyesha kwamba Yesu alitabiri ujio wa Muhammad kama mbadala wake. Wakristo wanajibu kwamba Yesu alisema huyo Mfariji mwingine ataishi nao na kuwa "ndani" yao, kitu ambacho kinawezekana kwa roho (Roho Mtakatifu), lakini si kwa mtu (mwenye mwili kama Muhammad). that can signify "called to one's aid in a court of justice", a "legal assistant", an "assistant", or an "intercessor".LSJ Lexicon entry. Perseus.tufts.edu. Iliwekwa mnamo 2014-03-11. Definition and etymology of Paraclete (2011) Historical Theology: An Introduction to Christian Doctrine. Zondervan, 431. Retrieved on 25 September 2014.  "The Influence of Christian Prophecy on the Johannine Portrayal of the Paraclete and Jesus". New Testament Studies (Cambridge University Press) 25 (01): 113–123.