Judaism
Christianity was originally a sect of Second Temple Judaism, but the two religions diverged in the first century. The differences between Christianity and Judaism originally centered on whether Jesus was the Jewish Messiah but eventually became irreconcilable. Major differences between the two faiths include the nature of the Messiah, of atonement and sin, the status of God's commandments to Israel, and perhaps most significantly of the nature of God himself. Due to these differences, Judaism traditionally regards Christianity as Shituf or worship of the God of Israel which is not monotheistic. Christianity has traditionally regarded Judaism as obsolete with the invention of Christianity and Jews as a people replaced by the Church, though a Christian belief in dual-covenant theology emerged as a phenomenon following Christian reflection on how their theology influenced the Nazi Holocaust.
Secularism in Israel
27.9% of the Jewish population identifies as Orthodox ("dati") or ultra-Orthodox. Most of the Orthodox and some ultra-Orthodox, believe that secular Zionism and Judaism can successfully work and live together in Israel. Politically they align with National Religious Party, the Morasha Party and by the two state-appointed Chief Rabbis. Orthodox Jews are often seen wearing knitted yarmulkes. The ultra-Orthodox (Charedi) are the smallest part of the population, representing only 12% of Jews living in Israel. The Charedim tend to live in their own communities and live according to Jewish law by following moral and dress codes passed down from ancestors. This part of the population is often seen wearing black hats or yarmulkes and some Hasidic sects are related to Hasidic sects in the United States.