"I saw that God has honest children among the nominal Adventists and the fallen churches, and before the plagues shall be poured out, ministers and people will be called out from these churches and will gladly receive the truth. Satan knows this; and before the loud cry of the third angel is given, he raises an excitement in these religious bodies, that those who have rejected the truth may think that God is with them. He hopes to deceive the honest and lead them to think that God is still working for the churches. But the light will shine, and all who are honest will leave the fallen churches, and take their stand with the remnant. EW 261.1"
"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."
The EGW passage directly echoes the call to 'come out of her, my people' from Revelation 18:4. It speaks of God's honest children being called out from fallen churches before the plagues are poured out, which is a clear parallel to the biblical text.
"For there shall arise false Christs, and false prophets, and shall shew great signs and wonders; insomuch that, if it were possible, they shall deceive the very elect."
Both passages address the theme of deception through false signs and wonders. Matthew 24:24 warns of false Christs and prophets deceiving even the elect. EGW speaks of Satan raising excitement in religious bodies to deceive those who have rejected the truth. The connection lies in the shared warning about deceptive signs and wonders.