Iran prepared on Friday for the dayslong funeral of the late Supreme Leader Ayatollah Ali Khamenei, with banners across Tehran urging the public to rise up in support of the Islamic Republic after the devastating war that killed the 86-year-old cleric. The country’s theocracy plans to see millions flood the streets of the capital beginning Saturday.

Khamenei’s flag-draped coffin sat at Tehran’s Grand Mosalla alongside family members killed in the Israeli airstrike that came in the first moments of the war on February 28. The dead being honoured include a son-in-law, his eldest daughter, a 14-month-old granddaughter and the wife of Iran’s new Supreme Leader Ayatollah Mojtaba Khamenei.