"Abraham's early teachings had not been without effect upon Ishmael, but the influence of his wives resulted in establishing idolatry in his family. Separated from his father, and embittered by the strife and contention of a home destitute of the love and fear of God, Ishmael was driven to choose the wild, marauding life of the desert chief, “his hand” “against every man, and every man's hand against him.” Genesis 16:12 . In his latter days he repented of his evil ways and returned to his father's God, but the stamp of character given to his posterity remained. The powerful nation descended from him were a turbulent, heathen people, who were ever an annoyance and affliction to the descendants of Isaac. PP 174.1"
"And he will be a wild man; his hand will be against every man, and every man’s hand against him; and he shall dwell in the presence of all his brethren."
EGW directly quotes Genesis 16:12 to describe Ishmael's character and destiny.
"The wife of Lot was a selfish, irreligious woman, and her influence was exerted to separate her husband from Abraham. But for her, Lot would not have remained in Sodom, deprived of the counsel of the wise, God- fearing patriarch. The influence of his wife and the associations of that wicked city would have led him to apostatize from God had it not been for the faithful instruction he had early received from Abraham. The marriage of Lot and his choice of Sodom for a home were the first links in a chain of events fraught with evil to the world for many generations. PP 174.2"
"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 discusses the negative consequences of Lot's wife's influence, leading him away from righteousness. This aligns with the principle in 2 Corinthians 6:14 against being unequally yoked with unbelievers. The connection is thematic, focusing on the dangers of associating with those who do not share one's faith.
"No one who fears God can without danger connect himself with one who fears Him not. “Can two walk together, except they be agreed?” Amos 3:3 . The happiness and prosperity of the marriage relation depends upon the unity of the parties; but between the believer and the unbeliever there is a radical difference of tastes, inclinations, and purposes. They are serving two masters, between whom there can be no concord. However pure and correct one's principles may be, the influence of an unbelieving companion will have a tendency to lead away from God. PP 174.3"
"Can two walk together, except they be agreed?"
EGW directly quotes Amos 3:3 to support her argument about the necessity of unity in marriage, making it a clear and explicit allusion.
"No man can serve two masters: for either he will hate the one, and love the other; or else he will hold to the one, and despise the other. Ye cannot serve God and mammon."
EGW uses the principle of serving two masters, as outlined in Matthew 6:24, to illustrate the conflict that arises when a believer is married to an unbeliever. While not a direct quote, the underlying principle is clearly applied.