2CH 30:6

6 So the runners went with the iggerot from HaMelech and his sarim throughout kol Yisroel and Yehudah, and according to the commandment of HaMelech, saying, Ye Bnei Yisroel, shuvu [(turn, return)] unto Hashem Elohei Avraham, Yitzchak, and Yisroel, and He will return to the remnant of you, that are escaped out of the yad of the Kings of Assyria.