sweetly singing o er the plains and the mountains in reply echoing their joyous strains alleluia alleluia gloria in excelsis deo gloria in excelsis deo shepherds why this jubilee why s your joyous song prolong what the gladsome tidings be that inspired this heavenly song gloria in excelsis deo gloria in excelsis deo oh come to bethlehem and see him whose birth the angels sing come adore on bended knee christ the lord our newborn king gloria in excelsis deo gloria in excelsis deo gloria in excelsis deo