When Jesus Christ spoke to the Sadducees, he showed that they were wrong in two ways. First, they did not know the Scriptures. Secondly, by denying the resurrection, they were denying the power of God. The resurrection of the body is a sign of God's power. In answer to their question, Christ said that there was no need for marriage in heaven. Marriage is necessary in this world so that children are born and the human race is propagated. But there is no death in heaven. Therefore, since there is no need for birth, there will be no need for marriage.