To be filled by the Spirit means to be controlled by the Spirit, bringing about a positive behavior change. When "filled" is applied to intoxication, alcohol causes a person's behavior to drastically change in a negative direction. What we use as our resource for our daily living determines how we will walk. To walk in the Spirit means to lean on it for guidance as one who uses a cane. To be filled with the Spirit means to yield to God's will and submit to His direction.