death is not easily escaped from by anyone; all of us with souls, earth-dwellers and children of men, must make our way to a destination already ordained.

In contrast, Beowulf is also a Christian text which reflects Christian beliefs and practices such as prayer and God's protection for those who pray.  Because this is an ancient poem, it wasn't written down for literally centuries.  when it was, it was the Catholic monks who did so, routinely inserting the contemporary doctrines of the church into the written text.  Lines such as the following were not reflective of the more pagan beliefs of the day:

And the Geat [Beowulf] placed complete trust in his strength of limb and the Lord's favour.

As an epic hero, Beowulf does exemplify some characteristics of the Christian tradition, as well.  He enters the battle with Grendel unselfishly, recognizing another's need and meeting it because he can.  He fights for his own honor, but he is also quick to give honor to his King.  He is loyal and true to that King until he dies. 

Perhaps this will give you a start, at least, as you think about more comparisons on your own.

In the text there are many times that fate is mentioned (or wyrd) and then God is mentioned as well.  It is obvious that the Anglo-Saxons were in a turning point of history where Christianity was spreading. 

When Grendel continues to kill Hrothgar's men, the council gets together to brainstorm ideas on how to rid themselves of such evil.  "Sometimes they sacrificed to the old stone gods, made heathen vows, hoping for Hell's support, the Devil's guidance in driving their affliction off...knowing neither God nor His passing as He walks through our world." This is the fate or pagan speaking.

Then only a few lines further down, it says, "Hail to those who will rise to God, drop off their dead bodies, and seek our Father's peace!"  It was really a mixture of the two. 

Often times Beowulf refers to fate when explaining how a battle ended, yet he praises God and gives thanks for the treasures they received after defeating the dragon.

Many elements in the epic show an amalgamation of paganism and Christianity. Let me name a few of them for you. 

Right from the beginning we read of Grendel's mother. She is: "From [Cain] sprang many a devil sent by fate"(43). From this quotation we can see a welding together of Christianity and paganism. On the one hand, the idea of fate is not a Christian idea, but one that resonates with paganism, which goes back to the Greeks and Romans. On the other hand, Cain is from the book of Genesis. Cain is the one who killed his brother. Therefore, according to the Bible,  Cain represents an unrighteous line of people. 

From a broader perspective, all the fighting and the glories of fighting are pagan. What makes it also Christian is that the fighting is the fighting of evil. This quote will show the former:

[A] hilted weapon, a rare and ancient sword named Hrunting. The iron blade with its ill-boding patterns has been tempered in blood. It had never failed the hand of anyone who hefted it in battle, anyone who had fought and faced the worst in the gap of danger. This was not the first time it had been called to perform heroic feats (ll 1457-1469).

These words could have been written in any pagan culture.

The story told in Beowulf reaches back into pagan times. Beowulf and the other characters are not Christians. They practiced ancient Germanic religions and had no notion of Christianity. Yet the poet who originally composed Beowulf and those who passed it down orally and then in writing were Christian, and as such, they introduced Christian themes and elements into the poem. Let's look at some of these to get you started.

First, you should note how many of the characters speak of God as their protector and the giver of grace and gifts. These are not especially pagan ideas. In fact, they are far more Christian, and the ancient Germanic religion would not have expressed such things in the same way. Look at Beowulf's comment after his fight with Grendel's mother and Hrothgar's mention of God's gifts and graces to him.

You might also focus on Grendel and his ancestry. He is identified as a descendent of Cain and as such is a violent outcast from the world. This, too, is a Christian conception based on the Bible. The ancient Germanic peoples would have had no concept of it.

On the other hand, Beowulf certainly contains many elements of the older pagan religion. Think, for instance, of Beowulf's pride in his fight with the dragon. This is the pride of a warrior who will not turn to anyone for help and of a king who relies on himself to protect his people. However, there is a bit of Christian commentary here, too. Beowulf's pride is his downfall.

The last paragraph of Chapter II articulates the Beowulf poet's—who most likely was a monk in an English monastery—emphasis on the value of the new religion, Christianity, in a world in which some are still drawn to pagan beliefs. The poet clearly states that those who do not embrace Christianity are destined to burn in Hell and that salvation is found with God. The tension between Christianity and pagan beliefs is evident throughout the poem and reflects the poet's constant awareness that he is interpreting an essentially pagan world to a Christian audience.

The epic poem we know as Beowulf is a written version that incorporates several previous oral versions. The earliest manuscript known to survive is from about AD 1000. The epic originally dates back to pre-Christian times, but the written version uses Christian ideas and specific Biblical references to add credibility to the idea of Beowulf as a noble hero and implicitly or explicitly associates him with Jesus.

Grendel and his mother, for example, are called descendants of Cain, and that is given as the reason they must roam the plain. The role of God in determining people’s fate, or as an object of supplication, occurs frequently.

On a conceptual level, Beowulf’s journey into Grendel’s mother’s lair and successful return are often cited as a death and resurrection story. Not only in his nobility and willingness to be sacrificed if necessary, but in this actual journey, he is comparable to Christ.

Throughout Beowulf, there is a tension between elements of Christianity and of pagan beliefs. One very prominent example is the Anglo-Saxon idea of wyrd, or fate, which seems to exist alongside the Christian notion of Providence, or the will and workings of God. For example, the narrator claims that Grendel, himself the "outcast of the Lord" and a descendent of Cain, would have killed more Danes except that:

God in his wisdom and the man's (Beowulf's) courageous spirit had withstood that wyrd and him. The lord ruled all the human race as he still does."

On the other hand, the only explicit references to Judeo-Christian faith are to the Old Testament, as the reference to Cain above indicates. Though the poem was probably committed to paper by a monk, it takes place in a pagan world. Many of its concerns, like the role of Providence in the lives of people, are Christian in nature, and some scholars have even argued that Beowulf represents a Christ-like figure in the poem. 

This is a great question. If you look at the main themes apart from the biblical quotations, then you will be able to see some of the most important aspects of Christianity and Germanic values. First, there is a strong demarcation between good and evil. Even the imageries of good verse evil is pronounced. Grendel is a monster and Beowulf is far from it. Second, there is a hero, Beowulf who would save his people, even at his own expense. This is the heart of Christianity. Third, everything about the text is about fighting and fighting is tied to a person's worth - a nice window into Germanic culture.

There are components of both pagan and Christian elements in the epic poem Beowulf. Christianity is mentioned within the very first part of the poem, when the narrator is discussing the history of the Danes:

"Shield had a son,/child for his yard, sent by God to comfort the people,to keep them from fear / Grain was his name; / he was famous throughout the North."

Then, a bit later, when Grendel, the villain, is introduced, the narrator states:

"He was of a race of monsters/exiled from mankind by God/He was of the race of Cain,/that man punished for murdering his brother."

Cain and Abel were brothers in the Bible; Caine murdered his brother Abel out of jealousy, thinking that God liked Abel better.

We also see pagan elements in the work, not only in the fighting/warrior society that Beowulf is living in, but also in the idea of fate. In the poem Beowulf states:

"If battle takes me,/send this best of war garments,/this shirt of mail,to Hygelac--/it is an inheritance from Hrethel/and the work of Weland. Fate always goes as it will!"

Beowulf also brags about the fact that FATE was in his own hands when he tells Unferth of his battles with the sea monsters:

"I saw cliffs, the windy/walls of the sea./Fate often saves an undoomed man if his courage holds./Anyway, with my sword/I slew nine sea monsters."

They also speak about the old warrior traditions in pagan society:

"Sometimes a king's man, a warrior/covered in glory who knew/the old traditions, would be/reminded of an ancient song,/and he would call up words adorned/in truth. The man would think/of Beowulf's deeds and quickly/compose a skillful tale in words."

Yet Hrothgar, even though a king and warrior, still speaks of Christianity through God:

"For this sight I give thanks to the Almighty./I have suffered much/from Grendel's scourge./God, the glorious protector,/works wonder after wonder."

So as you can see, pagan and Christian elements run throughout the poem in various parts and through various characters.