The covenant we make at baptism and renew as we partake of the sacrament--to take upon ourselves the name of Jesus Christ, always remember Him, and keep His commandments--includes the promise that we will always have His Spirit, that we will always have that light to be with us. The emblems of the Savior's Atonement remind us that we need not stumble in darkness. We can have His light with us always. Growing up on Long Island, in New York, I understood how vital light was to those traveling in the darkness on the open sea. How dangerous is a fallen lighthouse! How devastating is a lighthouse whose light has failed! We who have the gift of the Holy Ghost must be true to its promptings so we can be a light to others. "Let your light so shine before men," said the Lord, "that they may see your good works, and glorify your Father which is in heaven." We never know who may be depending on us.