“When King Seleucus died, King Antiochus, who was called Epiphanes, succeeded to the kingdom. Then Jason, the brother of Onias, obtained the high priesthood by corruption. He promised the king at an interview three hundred sixty talents of silver and, from another source of revenue, eighty talents. In addition to this, he promised to pay one hundred fifty more if permission were given to establish by his authority a gymnasium and a body of youth for it. He wanted to enroll the men of Jerusalem as citizens of Antioch. When the king assented, Jason came to office. He at once shifted his countrymen over to the Greek way of life.”
By the time that Onias arrived in Antioch, Heliodorus had already assassinated King Seleucus IV (187-175 BCE). Now King Antiochus IV (175-164 BCE), the son of King Antiochus III who had ruled from 222-187 BCE, became king. He was the brother of King Seleucus IV. Jason was the brother of the high priest Onias, so that he was a Levite. He obtained the high priesthood by corruption. I still think that it is strange that the Syrian king had the right to name the Jewish high priest. Jason has promised the new king about 440 talents of silver, the equivalent of a quarter million $USA. He wanted a Greek gymnasium in Jerusalem that would become the center of political and cultural education. He also wanted all the men of Jerusalem to be citizens of Antioch. The new King Antiochus IV said fine. Thus Jason took over as the new high priest of Jerusalem. He wanted to shift his countrymen to the new Greek way of life. Unlike in 1 Maccabees, chapter 1, where the movement to the Greek way was led by the generic renegades, here it is explicitly assigned to Jason, the new high priest. Despite his protestations of not getting into details, this biblical author explained the role of the high priest Onias and his brother Jason in great detail.