Samuel Rutherford on Tyranny and Government

On tyranny and resistance:

"Therefore an unjust king, as unjust, is not that genuine ordinance of God, appointed to remove injustice, but accidental to a king. So we may resist the injustice of the king, and not resist the king. 8. If, then, any cast off the nature of a king, and become habitually a tyrant, in so far he is not from God, nor any ordinance which God doth own."

"A tyrant is he who habitually sinneth against the catholic good of the subjects and the state, and subverteth law."

On balance of powers due to man's depravity:

"Power and absolute monarchy is tyranny; unmixed democracy is confusion; untempered aristocracy is factious dominion...all three thus contempered have their own sweet fruits through God's blessing, and their own diseases by accident, and through man's corruption; and neither reason nor Scripture shall warrant any one in its rigid purity without mixture."

-Samuel Rutherford, Lex Rex, 1644