The Sadducees do not believe that people rise from the dead. Some of them came to Jesus with a question.
References for Luke 20:27
"Teacher," they said, "Moses wrote for us about a man's brother who dies. Suppose the brother leaves a wife but has no children. Then the man must get married to the widow. He must have children to carry on his dead brother's name.
"There were seven brothers. The first one got married to a woman. He died without leaving any children.
The second one got married to her.
And then the third one got married to her. One after another, the seven brothers got married to her. They all died. None left any children.
Finally, the woman died too.
Now then, when the dead rise, whose wife will she be? All seven brothers were married to her."
Jesus replied, "People in this world get married. And their parents give them to get married.
But it will not be like that when the dead rise. Those who are considered worthy to take part in what happens at that time won't get married. And their parents won't give them to be married.
They can't die anymore. They are like the angels. They are God's children. They will be given a new form of life when the dead rise.
"Remember the story of Moses and the bush. Even Moses showed that the dead rise. The Lord said to him, 'I am the God of Abraham. I am the God of Isaac. And I am the God of Jacob.'(Exodus 3:6)
He is not the God of the dead. He is the God of the living. In his eyes, everyone is alive."
Some of the teachers of the law replied, "You have spoken well, teacher!"
And no one dared to ask him any more questions.