The closest semblance to an afterlife mentioned is that of ones name and deeds remaining to be celebrated after one's death.
Another conflict between Christianity and the heroic code of the Scandinavian people is that of "weir gold." This warrior culture fully believed in vengeance and even goes so far as to use this retribution as a replacement for the mourning of a loved ones death. As is well known, Christianity holds to the faith of forgiveness and "turning the other check." At such instances as these, the poet struggles to place these two sets of values in harmony with one another. It is interesting that these basic pagan values are not done away with simply because the poet is a Christian. Perhaps this is due to the fact that as an artist, the poet was aware of how much this would damage the tale of "Beowulf.".
Some of these omissions of Christian doctrine could be the result of this religion still being relatively new to both the poet and his audience. The ancient values of Beowulf and his time coincide more with the precepts of the Old Testament (e.g. eye for an eye), than with the teachings of Christ within the New Testament. Nevertheless, it is possible to view the epic of Beowulf as a Christian parable, with Beowulf as a Jesus Christ figure and the monsters as representing the Devil and his minions.
The monsters remain to me perhaps one of the most remarkable combinations of pagan beliefs with those of Christianity. To explain these grotesque creatures of evil, and still adhere to his faith the poet claims them to be the progeny of Cain: the first murderer within the Christian religion. Upon executing his brother Abel, Cain was banished to the land of Nod; where he was to mate with Lilith. It is from this unholy union that Grendel, his mother, and perhaps even the dragon spring from. This is one instance where I feel the poet has done an excellent job in maintaining continuity between the two faiths.