This is a historical example of calling to the Homeland. It is said that when Amergin recited this poem twice, the attributes of Ireland were recreated. Amergin's Invocation to the land of Ireland is one of the more common literary excerpts that are available that provides an example of this.

I invoke the land of Ireland:
much coursed be the fertile sea,
fertile be the fruit strewn mountain,
fruit strewn be the showery wood,
showery be the river of waterfalls,
of waterfalls be the lake of deep pools,
deep pooled be the hill-top well,
a well of tribes be the assembly,
an assembly of kings be Temair.
Temair be the hill of the tribes,
the tribes the sons of Mil,
of Mil of the ships, the barks!

Let the lofty bark be Ireland,
Lofty Ireland, darkly sung,
an incantation of great cunning:
the great cunning of the wives of Bres,
the wives of Bres of Buiagne:
the great lady, Ireland,
Eremon hath conquered her,
I, Eber have invoked her
I invoke the land of Ireland.