When the children see the first star in the eastern evening sky, which symbolizes the trek of the Three Wise Men, the Sviata Vechera may begin. In farming communities the head of the household now brings in a sheaf of wheat called the didukh which represents the importance of the ancient and rich wheat crops of Ukraine, the staff of life through the centuries. Didukh means literally "grandfather spirit" so it symbolizes the family's ancestors. In city homes a few stalks of golden wheat in a vase are often used to decorate the table. The dinner table sometimes has a few wisps of hay on the embroidered table cloth as a reminder of the manger in Bethlehem. A prayer is said and the father says the traditional Christmas greeting, "Chrystos rodyvsya!" which is translated to "Christ is born!", which is answered by the family with "Slavite Yoho!" which means "Let us glorify him!". In some families the Old Slavic form "Сhrystos rozhdayetsya!" is used. At the end of the Sviata Vechera the family often sings Ukrainian Christmas Carols. In many communities the old Ukrainian tradition of caroling is carried on by groups of young people and members of organizations and churches calling at homes and collecting donations.