Is it possible for us to shine a light for others to see in this dark world?

Scripture reminds us in Isaiah 58 that, “If you give yourself to the hungry and satisfy the afflicted soul, then your light will go forth in the darkness, and your night will be like noonday. The Lord will guide you continually, giving you water when you are dry and restoring your strength. You will be like a well-watered garden, like an ever-flowing spring.”