A group of African-American clergy and conservative Catholics said Wednesday that lawmakers who vote for a gay marriage bill will be banned from their churches.

“We want to make sure that we send a message to our elected officials that as a collective community and a collaborative, we will not allow you to speak in our churches, you will not be invited to our church when you're running for office because we as a community are incensed,” said Bishop Kwame Lance Davis, senior pastor at New Zion Christian Fellowship Covenant Church in Dolton.

Davis made the threat in connection with the announcement of a new religious coalition headed by the Catholic Conference of Illinois opposed to the proposed bill which would make Illinois the 10th state to legalize marriage equality.

According to Chicago's WBEZ, the coalition is planning a media campaign aimed at derailing the measure.

After passage in the Illinois Senate, the marriage bill awaits action in the House.

(Related: Majority of Catholics support gay marriage.)