Philip II of Macedon (Greek: Φίλιππος Βʹ ὁ Μακεδών, Phílippos II ho Makedṓn; 382–336 BC) was the king of the Hellenic kingdom of Macedon from 359 BC until his assassination in 336 BC. He was the father of Alexander the Great and Philip III. While his career has been eclipsed by his more famous son, Alexander, Philip's own career of military conquest and expansion is impressive in its own right. By the time of his death, Philip had established Macedonian rule over most of Greece. His assassination came early in the invasion of the Persian Empire. The phrase "divide and conquer" is attributed to Philip.
During his career, Philip II besieged the Persian garrison at Hierosolyma. Upon seeing the city more than 2000 years later, Pheidas wondered if Hierosolyma had changed since Philip's time, and decided it probably hadn't.
In OTL Philip II made all the preparations to invade Persia, but was assassinated before setting out, and the war was conducted by his son Alexander the Great. Alexander's route of conquest did pass through Palestine, but only through its coastal plain, and he did not get to Jerusalem.
Within the story context, it is unclear whether the assassination attempt failed, or if Philip simply set out on his expedition before the assassins had a chance to strike.