Thomas Brooks emphasizes that sin is the worst and greatest tyrant in the world, enslaving both body and soul. Unlike earthly tyrants, sin exerts control over the heart, enforcing laws of pride, lust, and hypocrisy, leading to malice and hatred among people. Despite its long history and many attempts to resist it, sin remains a powerful force that can only be defeated by divine power through Christ. Brooks encourages believers to engage Christ in their struggles against sin, assuring them that victory is possible through His strength.

"At one time we too were foolish, disobedient, deceived and enslaved by all kinds of passions and pleasures. We lived in malice and envy, being hated and hating one another." Titus 3:3. Sin is the worst and greatest tyrant in the world. Other tyrants can but tyrannize over our bodies—but sin is a tyrant which tyrannizes over both body and soul. None have been able to tame the tyrants, the sins, the lusts—which have been in their own bosoms. Sin is a tyrant which has a kind of jurisdiction in most men's hearts; it sets up . . . the law of pride, the law of lust, the law of oppression, the law of formality, the law of hypocrisy, the law of carnality, the law of self-love, the law of carnal reason, the law of unbelief —and strictly commands subjection to them, and proclaims fire and sword to all who will not bow down. Sin is a tyrant of many thousand years' standing, and though it has had many a wound, and received much opposition—yet still it plays the tyrant all the world over! Oh, the hearts that this tyrant makes to ache! the souls that this tyrant makes to bleed! Other tyrants have been brought down and brought under control by a human power—but this tyrant, sin, cannot be controlled, but by a divine power. Only the power of Christ can bring down this tyrant, and cast down his strongholds. Therefore, engage Christ in the conflict, draw Him into the battle, and in the end the conquest will be yours.