"Representatives of Christ God expects those who bear the name of Christ to represent Him. Their thoughts are to be pure, their words noble and uplifting. The religion of Christ is to be interwoven with all that they do and say. They are to be a sanctified, purified, holy people, communicating light to all with whom they come in contact. It is His purpose that by exemplifying the truth in their lives they shall be a praise in the earth. The grace of Christ is sufficient to bring this about. But let God's people remember that only as they believe and work out the principles of the gospel can they fulfill His purpose. Only as they yield their God-given capabilities to His service will they enjoy the fullness and the power of the promise whereon the church has been called to stand. CT 322"
"Let your light so shine before men, that they may see your good works, and glorify your Father which is in heaven."
EGW's statement about Christians representing Christ and communicating light directly reflects the principle in Matthew 5:16, where believers are called to let their light shine.
"Because of the increasing power of Satan's temptations, the times in which we live are full of peril for the children of God, and we need to learn constantly of the Great Teacher, that we may take every step in surety and righteousness. Wonderful scenes are opening before us; and at this time a living testimony is to be borne in the lives of God's professed people, so that the world may see that in this age, when evil reigns on every side, there is yet a people who are laying aside their will and are seeking to do God's will—a people in whose hearts and lives God's law is written. CT 322.1"
"And be not conformed to this world: but be ye transformed by the renewing of your mind, that ye may prove what is that good, and acceptable, and perfect, will of God."
Both passages discuss the need for believers to be distinct from the world and to align their will with God's will. EGW's passage emphasizes the importance of not conforming to the world's evil, echoing the sentiment in Romans 12:2.
"Before Christ went to His final conflict with the powers of darkness, He lifted up His eyes to heaven and prayed for His disciples. He said, “I pray not that Thou shouldest take them out of the world, but that Thou shouldest keep them from the evil. They are not of the world, even as I am not of the world. Sanctify them through Thy truth: Thy word is truth.” John 17:15-17 . CT 322.3"
"I pray not that thou shouldest take them out of the world, but that thou shouldest keep them from the evil."
EGW directly quotes John 17:15.
"Sanctify them through thy truth: thy word is truth."
EGW directly quotes John 17:17.
"I pray not that thou shouldest take them out of the world, but that thou shouldest keep them from the evil. They are not of the world, even as I am not of the world. Sanctify them through thy truth: thy word is truth."
Ellen White directly references John 17:15-17 in this passage.