Some of the Sadducees, who say there is no resurrection, came up and questioned Him:
References for Luke 20:27
"Teacher, Moses wrote for us that if a man's brother has a wife, and dies childless, his brother should take the wife and produce offspring for his brother.
References for Luke 20:28
Now there were seven brothers. The first took a wife and died without children.
Also the second
References for Luke 20:30
and the third took her. In the same way, all seven died and left no children.
Finally, the woman died too.
Therefore, in the resurrection, whose wife will the woman be? For all seven had married her."
References for Luke 20:33
Jesus told them, "The sons of this age marry and are given in marriage.
But those who are counted worthy to take part in that age and in the resurrection from the dead neither marry nor are given in marriage.
For they cannot die anymore, because they are like angels and are sons of God, since they are sons of the resurrection.
Moses even indicated [in the passage] about the burning bush that the dead are raised, where he calls the Lord the God of Abraham and the God of Isaac and the God of Jacob.
References for Luke 20:37
He is not God of the dead but of the living, because all are living to Him."
References for Luke 20:38
Some of the scribes answered, "Teacher, You have spoken well."
And they no longer dared to ask Him anything.