Ezra 4:2-3

2they approached Zerubbabel and the heads of the families. They told them, “We want to help you build because we worship the same God you worship. We have been sacrificing to him  since the time of King Esarhaddon of Assyria, who brought us here.”

3But Zerubbabel, Jeshua, and the rest of the heads of Israel’s families told them, “It isn’t right for your people and our people to build a temple for our God together. We must build it alone for the Lord God of Israel, as King Cyrus of Persia ordered us to do.”