There really isn't a need for Christians to study Judaism as Christianity was based on the rejection of Judaism. One of the only similarities between the two religions is that the Christian Old Testament was based on the Tanach (Jewish Bible), however, the Christian OT was altered to support the teachings of Christianity.
No. As with any other aspect of Judaism, even non-Jews are welcome to study. Generally males only need to be circumcised if they wish to convert to Judaism.
Judaism today doesn't really have leaders, but if you mean teachers or Rabbis, you would need to study in a formal institution.
They were a group of early Christians who were in the process of leaving Judaism.
Judaism is the religion that was a precursor to Christians. The early Christians, namely the apostles, were Jewish because Jesus was still alive and Christianity had not been developed yet. Jesus himself was Jewish.
For Judaism: http://judaism.answers.com/jewish-history/jerusalem-in-judaism
A:Very few people, other than Jews themselves, study Judaism. Some Christians equate the study of the Old Testament with the study of Judaism, but this is not really true, and actually misleading. Knowing the Old Testament is not the same as knowing Judaism.It may be important for scholars and Messianic Jews to study Judaism. Fortunately, it is not important for other non-Jewish people to study Judaism.
Because Christianity is the fulfillment of Judaism.
When Jesus and his followers "branched off" of Judaism.
No, the Jonas Brothers are Evangelical Christians
William Horbury has written: 'Herodian Judaism and New Testament Study (Wissenschaftliche Untersuchungen Zum Neuen Testament)' 'Messianism among Jews and Christians' -- subject(s): Bible, Biblical teaching, Criticism, interpretation, History of doctrines, Judaism, Messiah
That's a trick question. There are no churches in either Judaism or Buddhism. Only Christians have churches.
Islam calls their holy book the Koran. For Judaism it is the Tanakh. For Christians it is the Bible.