Iran’s supreme leader Ayatollah Ali Khamenei is set to lead Friday prayers and deliver a public sermon that could shed light on the Islamic Republic’s plans after a massive missile attack on enemy Israel, AFP reports.

The supreme leader, who wields the highest authority in Iran, will lead Muslims in prayer at the Imam Khomeini Grand Mosalla mosque in central Tehran, his official website said.

The prayer will follow “a commemoration ceremony” at 10:30am for Hassan Nasrallah, the slain leader of the Lebanese fighter group Hezbollah.