Rep. John Lewis (D-Ga.) rose on the House floor Friday to encourage his colleagues to support a resolution approving the Iran nuclear deal and, in the words of Martin Luther King Jr., “rededicate ourselves to the long and bitter, but beautiful struggle for a new world.”

In a two-minute speech, Lewis predicted the measure would be the “most important vote that we cast during our time in Congress.” While the vote was purely symbolic, as Senate Democrats on Thursday blocked a move to halt the deal’s implementation, Lewis said a vote for the deal is a vote for peace.