"A Call For Reformation Unless the church, which is now being leavened with her own backsliding, shall repent and be converted, she will eat of the fruit of her own doing, until she shall abhor herself. When she resists the evil and chooses the good, when she seeks God with all humility and reaches her high calling in Christ, standing on the platform of eternal truth and by faith laying hold upon the attainments prepared for her, she will be healed. She will appear in her God-given simplicity and purity, separate from earthly entanglements, showing that the truth has made her free indeed. Then her members will indeed be the chosen of God, His representatives. 8T 250"
"As many as I love, I rebuke and chasten: be zealous therefore, and repent."
Both passages discuss the need for repentance and reformation, with a focus on spiritual health and purity. While not a direct quote, the themes of rebuke, chastening, and the call to repent are present in both.
"God has not changed toward His faithful servants who are keeping their garments spotless. But many are crying, “Peace and safety,” while sudden destruction is coming upon them. Unless there is thorough repentance, unless men humble their hearts by confession and receive the truth as it is in Jesus, they will never enter heaven. When purification shall take place in our ranks, we shall no longer rest at ease, boasting of being rich and increased with goods, in need of nothing. 8T 250.1"
"For when they shall say, Peace and safety; then sudden destruction cometh upon them, as travail upon a woman with child; and they shall not escape."
EGW directly quotes "Peace and safety; then sudden destruction cometh upon them" from 1 Thessalonians 5:3.
"Because thou sayest, I am rich, and increased with goods, and have need of nothing; and knowest not that thou art wretched, and miserable, and poor, and blind, and naked:"
EGW directly alludes to the Laodicean church's self-deception described in Revelation 3:17, particularly the phrase "rich and increased with goods, and in need of nothing."
"Who can truthfully say: “Our gold is tried in the fire; our garments are unspotted by the world”? I saw our Instructor pointing to the garments of so-called righteousness. Stripping them off, He laid bare the defilement beneath. Then He said to me: “Can you not see how they have pretentiously covered up their defilement and rottenness of character? ‘How is the faithful city become an harlot!’ My Father's house is made a house of merchandise, a place whence the divine presence and glory have departed! For this cause there is weakness, and strength is lacking.” 8T 250.2"
"How is the faithful city become an harlot! it was full of judgment; righteousness lodged in it; but now murderers."
EGW directly quotes Isaiah 1:21 within a larger discussion of spiritual decline and corruption, making the connection undeniable.