"men, that they may see your good works, and glorify your Father which is in heaven.” If the light of God be in you, it will shine forth to others. It can never be concealed. 3T 376.1"
"Let your light so shine before men, that they may see your good works, and glorify your Father which is in heaven."
The EGW passage directly quotes Matthew 5:16 and then expands on the idea of letting one's light shine.