Then the peasant went on board the vikings' boat, and they hastened to Sigvald to tell him that the earl lay in a bay but a little way off.
The Jomsvikings armed themselves as if they were going to meet a large army, which the peasant said was unnecessary, as the earl had but few ships and men.
But no sooner had the Jomsvikings come within sight of the bay than they knew that the peasant had deceived them. Before them lay more than three hundred war-ships.
When the peasant saw that his trick was discovered he jumped overboard, hoping to swim to shore. But one of the vikings flung a spear after him, and the peasant sank and was seen no more.
Now though the vikings had fewer ships than Earl Hakon, they were larger and higher, and Sigvald hoped that this would help them to gain the victory.
Slowly the fleets drew together and a fierce battle began. At first Hakon's men fell in great numbers, for the Jomsvikings fought with all their wonted strength. So many spears also were aimed at Hakon himself that his armor was split asunder and he threw it aside.
When the earl saw that the battle was going against him, he called his sons together and said, "I dislike to fight against these men, for I believe that none are their equals, and I see that it will fare ill with us unless we hit upon some plan. Stay here with the host and I will go ashore and see what can be done."
Then the jarl went into the depths of a forest, and, sinking on his knees, he prayed to the goddess Thorgerd. But when no answer came to his cry, Hakon thought she was angry, and to appease her wrath he sacrificed many precious things to her. Yet still the goddess hid her face.
In his despair Hakon then promised to offer human sacrifices, but no sign was given to him that his offering would be accepted.
"Thou shalt have my son, my youngest son Erling!" cried the King, and then at length, so it seemed to Hakon, Thorgerd was satisfied. He therefore gave his son, who was but seven years old, to his thrall, and bade him offer the child as a sacrifice to the goddess.