When Frithiof saw that the king was determined, he took off his mantle and spread it beneath a tree. The king in trusting friendship leaned his head against the stranger's knee. Soon he slept as the hero sleeps after the battle, or as the infant sleeps cradled in its mother's arms.
As he slumbered, hark! from the branch of a tree a coal-black bird sings: "Frithiof, now thou mayest slay thine enemy, the old king. Human eyes do not behold thee!" But a snow-white bird sings: "Though no human eye behold thee, Odin sees and hears each word. Wouldst thou be a coward and slay an old man now defenceless and sleeping! The hero-crown is not won by such a deed."
So sang the birds. Frithiof, snatching up his battle-blade, flung it far from him into the gloomy glade. The black bird flew away into the dark underworld. The snow-white bird, singing sweetly as a harp tone, mounted towards the sun.
Suddenly the old man awoke: "Sleep is sweet beneath a tree, guarded by a brave man's weapon. But where is your sword? What has parted you who have never before been parted?"
"It is not hard to find a sword," replied Frithiof. "Sharp is its tongue, O King, and it never speaks for peace. I think it is haunted by an evil spirit."
"I have not slept, O youth, but have been proving you. Man or sword a wise man testeth ere in them he can confide. You are Frithiof. I have known it since first you entered my hall," said the old king. "Why did you enter my home in disguise? Honour, Frithiof, sits not nameless, the rude guest of hospitality. We had heard of a Frithiof whom both men and gods revere. Soon, I thought, will he come against my home with his famous sword, bold and brave. But you came clad in tatters, a beggar's staff in your hand.
"But cast not down your eyelids. I have proved you and forgiven. I have pitied and forgotten. All life is a struggle, hardest in youth. You are young and I am old. Soon shall I rest in the grave. Therefore, O youth, take my kingdom and my queen. Be my son and let us forget our quarrel."
"I came not as a thief," said Frithiof sadly, "but only to see Ingeborg for the last time. Too long have I stayed as your guest. The gods will not forgive me. Balder the Good loves all mankind but me. Northland has cast me out, and no more shall I seek for peace on the earth so green and sweet. To ocean's billows will I go, out upon my good ship far as the stars can guide me and far as the stormy billows can bear me.
"Let me hear the rolling thunder, let me hear the lightning's voice;
When it thunders all around me, Frithiof's heart will then rejoice
Clang of shields and rain of arrows! let the sea the battle fill;
Purified, I'll then fall gladly, reconciled to heaven's will."