...Peter said, "Keep your behavior excellent among [unbelievers], so that in the thing in which they slander you as evildoers, they may on account of your good deeds, as they observe them, glorify God" (1 Pet. 2:12). I must confess that I 'know' much more than I 'do'.
But I suspect I'm not the only Christian that messes up from time to time.