What benefit is there in outward preparation?

Outward preparation, such as fasting, restrained and dignified demeanor, and appropriate dress are good customs. They may help us to think of the priceless worth of the Sacrament and its great blessings and help us to receive it with thanksgiving. God’s Word, however, does not command outward preparation, so it is a matter of free choice. Outward customs do not make worthy communicants of us. Even unbelievers may have them.