The Sadducees, who posed a question to Jesus in our Gospel passage, only accepted the authority of the first five books of the Old Testament. They did not find any mention of an afterlife in these books. They questioned Jesus about this, even though they knew His teachings differed. They presented a scenario in which the afterlife was seen as a simple extension of our earthly life. However, Jesus explained that the afterlife would be fundamentally different.
Jesus spoke of an eternal life that is not just a continuation of our earthly life but something entirely new and beyond our current understanding. St. Paul also described the afterlife as a transformation, stating that love will last forever. Our love for God and each other will not cease in death but will be perfected in heaven, fulfilling the purpose for which God created us.