Verse 12
The mountains and the hills - These are highly poetical images to express a happy state attended with joy and exultation.
Ipsi laetitia voces ad sidera jactant
Intonsi montes: ipsae jam carmina rupes,
Ipsa sonant arbusta.
Virg. Ecl. 5:61. "The mountain tops unshorn, the rocks rejoice;
The lowly shrubs partake of human voice."
Dryden.