Yes you have a point. The original Christianity was Gnosticism.This is the ESOTERIC side of Christianity. Saul or  Paul  was not the original.
Gnosticism (
Greek: γνῶσις 
gnōsis, 
knowledge, or in 
sanskrit gnana, 
knowledge) refers to a diverse, 
syncretistic religious movement consisting of various 
belief systems generally united in the teaching that humans are divine 
souls trapped in a 
material world created by an imperfect god, the 
demiurge, who is frequently identified with the 
Abrahamic God.
 The 
demiurge may be depicted as an embodiment of evil, or in other instances as merely imperfect and as benevolent as its inadequacy permits. This demiurge exists alongside another remote and unknowable 
Supreme Being that embodies good. In order to free oneself from the inferior material world, one needs 
gnosis, or 
esoteric spiritual knowledge available through direct experience or knowledge (
gnosis) of (this unknowable) God.
[1] Within the sects of gnosticism, however, only the 
pneumatics or 
psychics obtain gnosis; the 
hylic or 
Somatics, though human
[2], are doomed
[3]. 
Jesus of Nazareth is identified by some Gnostic sects as an embodiment of the supreme being who became incarnate to bring gnosis to the earth. In others (e.g. the 
Notzrim and 
Mandaeans) he is considered a mšiha kdaba "false messiah" who perverted the teachings entrusted to him by 
John the Baptist.
[4]
 Whereas formerly Gnosticism was considered mostly a corruption of Christianity, it now seems clear that traces of Gnostic systems can be discerned some centuries before the Christian Era. [5] Gnosticism may have been suppressed as early as the First Century, thus predating Jesus Christ.
[6] Along with Gnosticism in the 
Mediterranean and 
Middle East before and during the Second and Third Centuries. Gnosticism became a 
dualistic heresy to Judaism (see 
Notzrim), Christianity and 
Hellenic philosophy in areas controlled by the 
Roman Empire and 
Arian Goths (see 
Huneric), and the 
Persian Empire. Conversion to 
Islam and the 
Albigensian Crusade (1209–1229) greatly reduced the remaining number of Gnostics throughout the 
Middle Ages, though a few isolated communities continue to exist to the present. Gnostic ideas became influential in the philosophies of various 
esoteric mystical movements of the late 19th and 20th Centuries in 
Europe and 
North America, including some that explicitly identify themselves as revivals or even continuations of earlier gnostic groups.