'All the old gods are dead,
All the wild warlocks fled;
But the White Christ lives and reigns,
And throughout my wide domains
His Gospel shall be spread!'
On the Evangelists
Thus swore King Olaf.

But still in dreams of the night
Beheld he the crimson light,
And heard the voice that defied
Him who was crucified,
And challenged him to the fight.
To Sigurd the Bishop
King Olaf confessed it.

And Sigurd the Bishop said,
'The old gods are not dead,
For the great Thor still reigns,
And among the Jarls and Thanes
The old witchcraft still is spread.'
Thus to King Olaf
Said Sigurd the Bishop.

'Far north in the Salten Fiord,
By rapine, fire, and sword,
Lives the Viking, Raud the Strong;
All the Godoe Isles belong
To him and his heathen horde.'
Thus went on speaking
Sigurd the Bishop.

'A warlock, a wizard is he,
And lord of the wind and the sea;
And whichever way he sails,
He has ever favoring gales,
By his craft in sorcery.'
Here the sign of the cross
Made devoutly King Olaf.

'With rites that we both abhor,
He worships Odin and Thor;
So it cannot yet be said,
That all the old gods are dead,
And the warlocks are no more,'
Flushing with anger
Said Sigurd the Bishop.

Then King Olaf cried aloud:
'I will talk with this mighty Raud,
And along the Salten Fiord
Preach the Gospel with my sword,
Or be brought back in my shroud!'
So northward from Drontheim
Sailed King Olaf!

Henry Wadsworth Longfellow

http://www.poemhunter.com/poem/tales-of-a-wayside-inn-part-1-the-musician-s-tale-the-saga-of-king-olaf-x-raud-the-strong/