Christians, Jews, Muslims, Buddhists, Hindus and others will gather in Washington on Wednesday for what organizers are calling the largest faith-inspired mobilization for health care reform.

Rabbi David Sapperstein of the Religious Action Center of Reform Judaism, Sayyid Syeed of the Islamic Society of North America, the Rev. James A. Forbes Jr. of Riverside Church in New York and others will speak at an “interfaith service of witness and prayer” to “express strong unified support for health care reform,” according to press materials. Organizers are predicting a turnout of nearly 2,000 people representing 40 faith organizations.

The event is scheduled for 5 to 7 p.m. at Freedom Plaza, just west of the White House. It will be preceded by a health fair offering free health screenings beginning at 4 p.m.