Year 152 BC was a year of the pre-Julian Roman calendar. At the time it was known as the Year of the Consulship of Marcellus and Flaccus (or, less frequently, year 602 Ab urbe condita). The denomination 152 BC for this year has been used since the early medieval period, when the Anno Dominicalendar era became the prevalent method in Europe for naming years.
The pretender to the Seleucid throne, Alexander Balas, makes contact with Jonathan Maccabeus offering him terms even more favorable than those offered by the king Demetrius I Soter. In particular, Alexander offers him the official appointment as High Priest in Jerusalem. In response, Jonathan withdraws his support from Demetrius and declares his allegiance to Alexander. Thus Jonathan becomes the first member of his family to achieve appointment as High Priest.