Did Chrysostom Tell His Audience to Intervene When Other Christianoi Were Participating in Yahudi Practices?
Evidence: anti-Judaizing homilies ยท late 4th c.
What the ancient record says
Yes, not merely abstract lectures; he tells members of his audience to act. In Homily 8 he describes how a listener should approach another Christianos participating in Yahudi observances: visit the person, speak with him, question him, and confront his participation in Yahudi services, festivals, and fasts.
He tells them to confront the person about attending Yahudi services, participating in festivals, and joining fasts, then to repeat the accusations against Yahudim he had preached in the preceding days, so the sermons were designed to spread beyond the room, carrying his anti-Judaizing argument to other Christianoi (directly visible in Homily 8). Did he tell them to randomly attack Yahudim physically?
Not what this passage establishes, the instructions concern confronting fellow Christianoi and persuading them away from Yahudi practices; do not turn verbal/social pressure into an undocumented order for indiscriminate physical violence. Matters: his campaign was not passive, he mobilized his congregation to police the religious boundary.
Read it for yourself. Chrysostom, Homily 8 (Tertullian Project).
Evidence strength: Direct primary evidence.