What do Catholics believe regarding baptism for the dead, as mentioned in 1 Corinthians 15: 29? All must be baptized, but some die without the chance. What then?
Keep in mind that this is a catholic viewpoint, other faiths or those who do not believe might have other thoughts on the matter
In the case of those who have not yet heard the gospel or learned of God, but who nevertheless seek to follow the truth as they understand it, they have an implicit desire for God since they desire to follow the truth. They simply do not know that God is the truth. Consequently, they also can be saved through baptism of desire; therefore, a proxy baptism is superfluous, either before their death or after it. They are already united to God, even if they are not fully aware of it in this life (cf. Catechism of the Catholic Church 847-848, 1257-1260).
The Greek phrase rendered by the King James Version as "for the dead" is huper ton nekron. This phrase is as ambiguous in Greek as it is in English. The preposition huper has a wide semantic range and can indicate "for the sake of," "on behalf of," "over," "beyond," or "more than." Like the English preposition "for," it does not have a single meaning and does not require the Mormon idea of being baptized in place of the dead. Such a reading would be unlikely given the more plausible interpretations available, and even if huper were taken to mean "in the place of," it doesnt mean Paul endorses the practice.
First Corinthians 15 is a key chapter for Pauls teaching on the resurrection of the body. He makes no statement on baptism for dead persons except to note that some unnamed "they" practice it. While the rest of his teaching in chapter fifteen refers to "we," his Christian followers, "they" are not further identified. Who this group was may not be known with certitude today, but there are some reasonable interpretations:
1. Some commentators assume this verse refers to the practice of giving newly baptized children the names of deceased non-Christian relatives, with the hope that the dead might somehow share in the Lords mercy.
2. Another interpretation envisions the baptism of catechumens who have witnessed the persecution and martyrdom of their Christian predecessors. With their belief that the dead do rise, the Christian candidates come forward boldly and accept both the faith and its consequences.
3. A related view holds that the group consists of those baptized in connection with a dead Christian loved one. In the first century, many families were split religiously, as only one or two members may have converted to Christianity. When it came time for these new Christians to die, they no doubt exhorted their non-Christian family members to consider the Christian faith and to embrace it so that they could be together in the next world. After the deaths of their Christian loved ones, many family members no doubt did investigate the Christian faith and were baptized so that they could be reunited with their loved ones in the afterlife. At the time, many pagans had at best an unclear idea of what the afterlife was like, and there were a large number of sects promising immortality to those who were willing to undergo their initiation rituals. A pagan husband mourning the death of his Christian wife might thus have an unclear idea of what her religion was all about, but still have it fixed in his mind: "If I want to be with her again, I need to become a Christian, like she was, so I can go where Christians go in the afterlife." This, then, could prompt him to investigate Christianity, learn its teachings about the afterlife and the resurrection, and embrace faith in Christ, receiving Christian baptism for the sake of being united with his dead loved one. The same is true, by extension, for other family relations as well, such as parents and children, grandparents and grandchildren. Even today deathbed exhortations to live the Christian life are not uncommon. People still resolve to live as Christians in order to please dead loved ones, to honor their memories, and to be united with them in the next life. The difference is that, today, most of those being exhorted have already been baptized.
4. Others advance the possibility that Paul was referring to the practice of a heretical cult that existed in Corinth. On this theory, Paul was not endorsing the practice of the group, but merely citing it to emphasize the importance of the resurrection. Rather, his point was: If even heterodox Christians have a practice that makes no sense if there is no resurrection of the dead, how much more, then, should we orthodox Catholics believe in and hope for the resurrection of the dead.
There is no other evidence in the Bible or in the early Church Fathers writings of baptism being practiced on the living in place of the dead. Some Mormon writers assert that some Christian commentators have discussed the possibility of a kind
of "baptism for the dead" among some in the Corinthian community in Pauls time. But these commentators do not suggest that the practice was accepted or mainstream. Given the silence of Scripture and tradition, we conclude rightly when we see this behavior as another aberration within a community of believers already soundly scolded by Paul for its lack of charity, its factionalism, its immorality, its abuse of the Eucharist, and other matters.
Although we have no way of knowing for sure who was engaging in this practice, it is certain that Paul was not referring to orthodox Christians baptizing the dead. Catholic and Protestant scholars agree on that.