What was Jesus' Religion?

In the Name of Allah, the Beneficent, the Merciful...the Best Knower.

In the Nation of Islam, we are taught from Master Fard Muhammad -- the Teacher of the Hon. Elijah Muhammad -- that "Christianity" is 551 years old. It is not that the Teachings of Jesus of Nazareth is 551 years old, but that "Christianity" as an institution and a name is 551 years old. This was taught to us beginning in the year 1934.

If, in 1934, "Christianity" was "551 years old", that would take us back to the year, 1383.

With that in mind...check this out...

Online Etymology Dictionary - Cite This Source - Share This

Christian
O.E. cristen, from L. Christianus, from Gk. christianos, from Christos (see Christ). First used in Antioch, according to Acts xi.25-26.
Christianity "the religion of Christ," is from c.1303. Christian Science is from 1863.
Online Etymology Dictionary, © 2001 Douglas Harper

And this...

Online Etymology Dictionary - Cite This Source - Share This

Christ
O.E. crist, from L. Christus, from Gk. khristos "the anointed" (translation of Heb. mashiah, see messiah), from khriein "to rub, anoint," title given to Jesus of Nazareth.
The L. term (Christus) drove out O.E. h¿land "healer" as the preferred descriptive term for Jesus. A title, treated as a proper name in O.E., but not regularly capitalized until 17c. Pronunciation with long -i- is result of Ir. missionary work in England, 7c.-8c. The Ch- form, regular since c.1500, was rare before. Christmas is O.E. Cristes m¿sse and retains original vowel sound; Father Christmas first attested in a carol attributed to Richard Smart, Rector of Plymtree (Devon) from 1435-77. Christmas tree first attested 1835 in Amer.Eng., from Ger. Weihnachtsbaum. Christmas cards first designed 1843, popular by 1860s.
Online Etymology Dictionary, © 2001 Douglas Harper

In light of the above, we are compelled to ask a very important question:

If the name "Christianity" was not in usage until around 1303 (or as late as 1383) -- which means more than 1,300 years AFTER the advent of Jesus, then what name did JESUS give to the doctrine that he taught?

It is also worthy of note that "Christ" is a "Greco-Latin" word, and Jesus did not speak either Greek nor Latin, according to history. Which leads us to a second question...

How did the Teachings of a Man who spoke neither Greek nor Latin come to be named in "Greco-Latin" terminology? Why don't we refer to the religion Jesus brought in the Language that JESUS spoke -- Aramaic and/or Hebrew?

This is not to discredit JESUS or what He Taught. It is simply to provoke deep thought into that which has been given to the world in His Name.

All comments welcomed.

RM