"Christ has made every provision that His church shall be a transformed body, illumined with the Light of the world, possessing the glory of Immanuel. It is His purpose that every Christian shall be surrounded with a spiritual atmosphere of light and peace. He desires that we shall reveal His own joy in our lives. PK 720.1"
"Ye are the light of the world. A city that is set on an hill cannot be hid."
Both passages highlight the role of believers as light in the world. Matthew 5:14 states that believers are the light of the world, while the EGW passage speaks of the church being illumined with the Light of the world and revealing Christ's joy.
"“Arise, shine; for thy light is come, and the glory of the Lord is risen upon thee.” Isaiah 60:1 . Christ is coming with power and great glory. He is coming with His own glory and with the glory of the Father. And the holy angels will attend Him on His way. While all the world is plunged in darkness, there will be light in every dwelling of the saints. They will catch the first light of His second appearing. The unsullied light will shine from His splendor, and Christ the Redeemer will be admired by all who have served Him. While the wicked flee, Christ's followers will rejoice in His presence. PK 720.2"
"Arise, shine; for thy light is come, and the glory of the Lord is risen upon thee."
Ellen White directly references Isaiah 60:1 in this passage.
"Then it is that the redeemed from among men will receive their promised inheritance. Thus God's purpose for Israel will meet with literal fulfillment. That which God purposes, man is powerless to disannul. Even amid the working of evil, God's purposes have been moving steadily forward to their accomplishment. It was thus with the house of Israel throughout the history of the divided monarchy; it is thus with spiritual Israel today. PK 720.3 The seer of Patmos, looking down through the ages to the time of this restoration of Israel in the earth made new, testified: PK 720.4"
"And if children, then heirs; heirs of God, and joint-heirs with Christ; if so be that we suffer with him, that we may be also glorified together."
Both passages discuss the concept of inheritance and being heirs, though Romans 8:17 focuses on being joint-heirs with Christ and suffering, while the EGW passage speaks more broadly about the redeemed receiving their inheritance and God's purpose for Israel being fulfilled. The connection is thematic, but not a direct allusion.