Psalms 73:8-9

Psalms 73:8-9. They are corrupt, and speak wickedly concerning oppression: they speak loftily. They set their mouth against the heavens,

Such big mouths-such blasphemous words-have they, that they attack God himself. There is nothing too high for them to drag it down-nothing too pure for them to slander. "They set their mouth against the heavens."