Mark 12:19-23
12:19 “Teacher, Moses wrote for us: ‘If a man’s brother dies and leaves a wife but no children, that man must marry the widow and father children for his brother.’
12:20 There were seven brothers. The first one married, and when he died he had no children.
12:21 The second married her and died without any children, and likewise the third.
12:22 None of the seven had children. Finally, the woman died too.
12:23 In the resurrection, when they rise again, whose wife will she be? For all seven had married her.”