Sentence:  Thou, Goddess-Mother, with our Sire comply, / Nor break the sacred Union of the Sky: / Lest, rouz'd to Rage, he shake the blest Abodes, / Launch the red Lightning, and <WSD>dethrone</WSD> the Gods. 
Meaning of the word marked with <WSD> tags:  To depose; to forcibly relieve a monarch of the monarchy.