Jesus in the Talmud
In the first few centuries CE, there were many sects of Judaism (such as Pharisees, Essenes, and Sadducees) each claiming to be the correct faith. Some scholars treat Christianity, during that era, referred to as Early Christianity, as simply one of many sects of Judaism. Some sects wrote polemics advocating their position, and occasionally disparaging rival sects. Some scholars view the depictions of Jesus in the Talmud as a manifestation of those inter-sect rivalries – thus the depictions can be read as polemics by the rabbinic authors of the Talmud which indirectly criticized the rival sect (Christianity), which was growing and becoming more dominant.
Judaism
Other examples of syncretism include Semitic neopaganism, a loosely organized sect which incorporates pagan or Wiccan beliefs with some Jewish religious practices; Jewish Buddhists, another loosely organized group that incorporates elements of Asian spirituality in their faith; and some Renewal Jews who borrow freely and openly from Buddhism, Sufism, Native American religions, and other faiths.