Does that mean you have to be perfect to participate in any form of Christian ministry or service? …No, of course not! If you wait till you're perfect, you’ll never be ready. What Pastor Bill means by being “clean” is that your heart has been cleansed by the blood of Jesus Christ. You’ll still have weaknesses, and you’ll find yourself falling into sin at times, but when He cleanses your heart and begins that inner transformation, your actions will shift to primarily focus on serving Him and avoiding sin.