“Like to these immeasurable mountains”

Like to these immeasurable mountains
Is my painful life, the burden of ire:
For of great height be they and high is my desire,
And I of tears and they be full of fountains.
Under craggy rocks they have full barren plains;
Hard thoughts in me my woeful mind doth tire.
Small fruit and many leaves their tops do attire;
Small effect with great trust in me remains.
The boist'rous winds oft their high boughs do blast;
Hot sighs from me continually be shed.
Cattle in them and in me love is fed.
Immovable am I and they are full steadfast.
Of the restless birds they have the tune and note,
And I always plaints that pass thorough my throat.