Commenting on 1 Cor 15:29 and the reference to baptism for the dead, Jesuit priest and NT scholar, Scott M. Lewis, wrote:
Verse 29 is one of the most vigorously disputed passages in the NT. On the surface, it seems rather simple. Using the statement of the opposition as a springboard—there is no resurrection—Paul points to the inconsistency and futility of a practice of the Corinthians, i.e., being baptized on behalf of the dead. Despite the numerous attempts to explain this passage away, or get out of the difficulties and discomfort it causes, it seems better to accept the obvious surface meaning of the passage: Some Corinthians practiced a form of vicarious baptism. What is meant exactly by that, and when and under what circumstances it was practiced is impossible to answer . . . . (Scott M. Lewis, So That God May Be All in All: The Apocalyptic Message of 1 Corinthians 15,12-34 [Rome: Editrice Pontificia Universitá Gregoriana, 1998], 70-71, emphasis added)
Such should be compared with the following comments from another NT scholar:
It cannot be denied that Paul is here [1 Cor 15:29] speaking of a vicarious baptism: one is baptised for the dead to ensure for them a share in the effect of baptism, and this must relate to a post-mortal life. It is also clear that Paul himself refers to this baptismal practice, and without distancing himself from it (This is the embarrassing perception which is the reason for some (comparatively few) interpreters making an imaginative attempt to ignore that this relates to a vicarious baptism). (Søren Agersnap, Baptism and the New Life: A Study of Romans 6:1-14 [Langelandsgade, Denmark: Aarhus University Press, 1999], 175-76)
