A call roars like a thunderbolt, like clashing swords and splashing waves:
The Rhine, the Rhine, the German Rhine!
Who guards today my stream divine?

Chorus: Dear Fatherland, no danger thine;
Firm stand thy sons to watch the Rhine!

They stand, a hundred thousand strong,
Quick to avenge their country's wrong;
With filial [family] love their hearts do swell,
They'll guard the sacred landmark well!

Chorus: Dear Fatherland, no danger thine;
Firm stand thy sons to watch the Rhine!

The dead of a heroic race
From heaven look down and meet this gaze;
He swears with dauntless heart, "O Rhine,
Be German as this heart of mine!"
Chorus: Dear Fatherland, no danger thine;
Firm stand thy sons to watch the Rhine!

While flows one drop of German blood,
Or sword remains to guard thy flood,
While rifle rests in patriot hand,
No foe shall tread [stomp] thy sacred strand!

Chorus: Dear Fatherland, no danger thine;
Firm stand thy sons to watch the Rhine!

Our oath resounds, the river flows,
In golden light our banner glows;
Our hearts will guard thy stream divine:
The Rhine, the Rhine, the German Rhine!
Using document 2, identify the poet’s purpose for writing The Watch on the Rhine.