With its popularity in the United States crashing, Israel is bankrolling what organizers say will be the largest campaign of its kind to bolster support among evangelical churches, until recently seen as an unshakable base of support for the Jewish state. Israel’s Foreign Ministry has hired an American firm to run the campaign, with plans to spend as much as $4.1 million on marketing aimed at Christians across the Western part of the country, according to newly filed federal disclosures. The documents, filed last week under the Foreign Agents Registration Act, reveal that Show Faith by Works, LLC will execute...