He grows too proud in his authority, Lifting his lofty head above the clouds, And, like a steeple, overpeers the church: But we'll pull down his haughty insolence; And, as Pope Alexander, our progenitor, Trod on the neck of German Frederick, Adding this golden sentence to our praise, "That Peter's heirs should
tread on Emperors, And walk upon the dreadful adder's back, Treading the lion and the dragon down, And fearless spurn the killing basilisk," So will we quell that haughty schismatic, And, by authority apostolical, Depose him from his regal government.
tread on - place or press the foot on; "He stepped on the hem of her long gown"