"Day after day, for a whole week, Luther continued to preach to eager crowds. The word of God broke the spell of fanatical excitement. The power of the gospel brought back the misguided people into the way of truth. GC 190.2"
"So mightily grew the word of God and prevailed."
Both passages describe the powerful and prevailing nature of the word of God, although in different contexts. The EGW passage illustrates the effect of Luther's preaching, while Acts 19:20 speaks more generally.
"Luther had no desire to encounter the fanatics whose course had been productive of so great evil. He knew them to be men of unsound judgment and undisciplined passions, who, while claiming to be specially illuminated from heaven, would not endure the slightest contradiction or even the kindest reproof or counsel. Arrogating to themselves supreme authority, they required everyone, without a question, to acknowledge their claims. But, as they demanded an interview with him, he consented to meet them; and so successfully did he expose their pretensions that the impostors at once departed from Wittenberg. GC 190.3"
"For the time will come when they will not endure sound doctrine; but after their own lusts shall they heap to themselves teachers, having itching ears;"
Both passages describe people who reject sound doctrine and seek teachers who cater to their desires. The EGW passage describes the characteristics of the fanatics Luther encountered, while 2 Timothy 4:3 is a more general prophecy.
"The fanaticism was checked for a time; but several years later it broke out with greater violence and more terrible results. Said Luther, concerning the leaders in this movement: “To them the Holy Scriptures were but a dead letter, and they all began to cry, ‘The Spirit! the Spirit!’ But most assuredly I will not follow where their spirit leads them. May God of His mercy preserve me from a church in which there are none but saints. I desire to dwell with the humble, the feeble, the sick, who know and feel their sins, and who groan and cry continually to God from the bottom of their hearts to obtain His consolation and support.”—Ibid., b. 10, ch. 10. GC 190.4"
"Who also hath made us able ministers of the new testament; not of the letter, but of the spirit: for the letter killeth, but the spirit giveth life."
Both passages contrast the 'letter' and the 'spirit,' with an emphasis on the importance of the latter. Luther's quote directly addresses the issue of relying solely on the 'Spirit' while neglecting Scripture, echoing the sentiment in 2 Corinthians 3:6.
"But now we are delivered from the law, that being dead wherein we were held; that we should serve in newness of spirit, and not in the oldness of the letter."
Both passages contrast the 'letter' and the 'spirit'. Luther's quote criticizes those who claim to be led by the Spirit while neglecting Scripture, which aligns with the idea of serving in 'newness of spirit' rather than 'oldness of the letter' in Romans 7:6.