How did Philo Judaeus show that he observed Jewish customs?

Philo Judaeus demonstrated his commitment to being an observant Jew through his explicit stance on religious law and his actions. He maintained that one should not omit the observance of any Jewish customs that were divinely ordained.1

While Philo did not detail his own daily religious practices, he provided evidence of his dedication in the following ways:

• Pilgrimage: He made a festival pilgrimage to Jerusalem, demonstrating his connection to the central site of Jewish worship.1
• Defense of Law: He was critical of those who interpreted ceremonial laws as mere parables and concluded they no longer needed to be obeyed, arguing instead for the continued observance of these laws.1
• Advocacy: He acted as a representative for his community, leading an embassy to the emperor Caligula to defend Jewish rights and religious standing following a pogrom in Alexandria.1

Philo’s work serves as a significant record of the relationship between Palestine and the Diaspora regarding ritual observance and law.1