Well, I think you're on the right track :)
The first step is to just carry on investigating Judaism, and making really sure it is the path for you. Being Jewish can be lovely - it can also be difficult at times!
When and if you feel that the 'tug' towards Judaism is something you just can't ignore, then THAT is the time to approach a Rabbi. Make sure you do tell him/her that you do have some Jewish heritage, i.e. your great grandfather.
Sometimes, a Rabbi will follow the traditional path of turning away a potential convert three times - this is just to test sincerity :)
But if you show that you know the basics of Jewish theology and that you are genuine, then you WILL find a nice, supportive Rabbi to help you.
Here's a key point: ONLY an Orthodox conversion is recognised by ALL movements within Judaism. So even if you think that ultimately, Reform suits you best, you should consider having an Orthodox conversion. This means that in years to come, if please G-d you have children, they too will be Jewish - but only if your conversion is an Orthodox one.
If they wanted to attend a Jewish school, for instance, then the TYPE of conversion you have could prove significant.
Sorry, I realise this all sounds very pedantic, but they are important points.
Here are some great resources:
And here are some books I highly recommend:
EXODUS by Leon Uris
THE CHOSEN by Chaim Potok
Best of luck :)
TO THE ASKER ************************************
PLEASE note that 'ARIKINDE' is NOT Jewish.
No Jew can worship ANY human - Jesus included - and remain Jewish. To worship anyone but G-d VIOLATES Torah.
If someone is born to a Jewish mother, and later converts to Christianity, then they are a CHRISTIAN, and not 'jewish'. In the Jewish world, they are an apostate.
Jesus does not play any role in Judaism. We regard him, when we mention him at all in conversation (rarely) as a young Jewish man who, like many others back then, thought himself the messiah.
· 1 decade ago