Ye are the light of the world. Matthew 5:14
In order to have the Holy Spirit in large measure, we must keep near to the Lord, for if we get away from him, the light will go out. If we neglect the privilege of prayer or of study of the Scriptures or of fellowship with the Lord through failure to think of him, the illumination of the Spirit will grow dim.
On the other hand, it will become brighter in proportion to our realization of our own imperfections and to the degree of our consecration to the Lord. This we manifest by the zeal with which we study his will as expressed in his Word, and with which we practice that will in the affairs of life. These are the means by which we may supply the oil to keep our light burning brightly.