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
Countries such as the United States, Israel, Canada, United Kingdom, Argentina and South Africa contain large Jewish populations. Jewish religious practice varies widely through all levels of observance. According to the 2001 edition of the National Jewish Population Survey, in the United States' Jewish community—the world's second largest—4.3 million Jews out of 5.1 million had some sort of connection to the religion. Of that population of connected Jews, 80% participated in some sort of Jewish religious observance, but only 48% belonged to a congregation, and fewer than 16% attend regularly.