Final answer:
The Mosaic core refers to the central religious teachings in the Torah.
Step-by-step explanation:
The term 'Mosaic core' refers to the central religious teachings in the Torah. After their Exodus from Egypt, Jews became monotheistic and developed a set of religious customs and laws to preserve their identity. The Torah, which is the sacred text of Judaism, contains the central teachings of the religion, including the covenant with God and moral behavior.