"Notwithstanding the spiritual darkness and alienation from God that exist in the churches which constitute Babylon, the great body of Christ's true followers are still to be found in their communion. There are many of these who have never seen the special truths for this time. Not a few are dissatisfied with their present condition and are longing for clearer light. They look in vain for the image of Christ in the churches with which they are connected. As these bodies depart further and further from the truth, and ally themselves more closely with the world, the difference between the two classes will widen, and it will finally result in separation. The time will come when those who love God supremely can no longer remain in connection with such as are “lovers of pleasures more than lovers of God; having a form of godliness, but denying the power thereof.” GC 390.1"
"Be ye not unequally yoked together with unbelievers: for what fellowship hath righteousness with unrighteousness? and what communion hath light with darkness?"
The EGW passage echoes the sentiment of separation from those who are not aligned with God, similar to the warning against being unequally yoked with unbelievers. The reference to 'lovers of pleasures more than lovers of God' strengthens the connection, although it comes from 2 Timothy 3:4, the overall theme aligns with 2 Corinthians 6:14.
"in Babylon will heed the call: “Come out of her, My people” ( Revelation 18:4 ). GC 390.2"
"And I heard another voice from heaven, saying, Come out of her, my people, that ye be not partakers of her sins, and that ye receive not of her plagues."
Ellen White directly references Revelation 18:4 in this passage.