"Brethren and sisters who have long claimed to believe the truth, I ask you individually, Have your practices been in harmony with the light, the privileges, and the opportunities granted you of heaven? This is a serious question. The Sun of Righteousness has risen upon the church, and it is the duty of the church to shine. It is the privilege of every soul to make advancement. Those who are connected with Christ will grow in grace and in the knowledge of the Son of God, to the full stature of men and women. If all who claim to believe the truth had made the most of their ability and opportunities to learn and to do, they would have become strong in Christ. Whatever their occupation,—whether they were farmers, mechanics, teachers, or pastors,—if they had wholly consecrated themselves to God they would have become efficient workers for the heavenly Master. 6T 423.1"
"Let your light so shine before men, that they may see your good works, and glorify your Father which is in heaven."
EGW directly references the concept of letting one's light shine, which is the core message of Matthew 5:16. The passage amplifies the idea by connecting it to personal growth and service.
"few who can unveil the mysteries of redemption? Why is it that the imputed righteousness of Christ does not shine through His professed followers as a light to the world? 6T 423.3"
"Ye are the light of the world. A city that is set on an hill cannot be hid."
Both passages discuss the idea of believers being a light to the world. EGW's question about the imputed righteousness of Christ shining through believers directly relates to the concept of being the 'light of the world' as described in Matthew.