The Old Testament of the Bible, which is called Tanakh by the Jews, is indeed anti-Semitic. The Biblical God is an Anti-Semite. The church father Ambrose of Milan, for example, came to this conclusion when he wrote: "God always hated the Jews. It is essential that all Christians hate them." And the church father John Chrysostom wrote: "In fact Isaiah called the Jews dogs and Jeremiah called them mare-mad horses. This was not because they suddenly changed natures with those beasts but because they were pursuing the lustful habits of those animals."
As someone who has read the entire Bible, I can agree with both of them, who are respected as great church fathers. It starts at the very beginning when the Jews were liberated from Egypt and arrived at Mount Sinai. Although the Jews saw the miracles of God, the first thing they did while Moses was on the mountain was to make a golden bull and worship it. The Jews provoked God so much with their evil deeds that God made them wander in the desert for 40 years as punishment, even though they could have reached the land of Canaan in less than 2 weeks (Numbers 32:13). The Jews provoked God so much that God even wanted to destroy the people of Israel completely (Exodus 33:5, Deuteronomy 9:12-14). And even later, the Jews provoked God by, among other things, practicing child sacrifice (Jeremiah 32:30-35) and eating blood (Ezekiel 33:23-26). The Jews were so wicked that God called them the worst nation (Ezekiel 3:4-7, 5:4-7).
Jeremiah 32:30-35 "The people of Israel and Judah have done nothing but evil in my sight from their youth; indeed, the people of Israel have done nothing but arouse my anger with what their hands have made, declares the Lord. From the day it was built until now, this city (Jerusalem) has so aroused my anger and wrath that I must remove it from my sight. The people of Israel and Judah have provoked me by all the evil they have done—they, their kings and officials, their priests and prophets, the people of Judah and those living in Jerusalem. They turned their backs to me and not their faces; though I taught them again and again, they would not listen or respond to discipline. They set up their vile images in the house that bears my Name and defiled it. They built high places for Baal in the Valley of Ben Hinnom to sacrifice their sons and daughters to Molek, though I never commanded—nor did it enter my mind—that they should do such a detestable thing and so make Judah sin."