Many of the professed, peculiar people of God are so conformed to the world that their peculiar character is not discerned, and it is difficult to distinguish “between him that serveth God and him that serveth Him not.” God would do great things for His people if they would come out from the world and be separate. If they would submit to be led by Him, He would make them a praise in all the earth. Says the True Witness: “I know thy works.” Angels of God who minister unto those who shall be heirs of salvation are acquainted with the condition of all and understand just the measure of faith possessed by each individual. The unbelief, pride, covetousness, and love of the world, which have existed in the hearts of God's professed people, have grieved the sinless angels. As they have seen that grievous and presumptuous sins exist in the hearts of many professed followers of Christ, and that God has been dishonored by their inconsistent, crooked course, they have been caused to weep. And yet…
"Then shall ye return, and discern between the righteous and the wicked, between him that serveth God and him that serveth him not."
EGW directly quotes Malachi 3:18.
"Wherefore come out from among them, and be ye separate, saith the Lord, and touch not the unclean thing; and I will receive you,"
EGW's statement about coming out from the world and being separate directly reflects the principle outlined in 2 Corinthians 6:17.
"Many believe that they are on the right foundation, that they have the truth; they rejoice in its clearness and boast of the powerful arguments in proof of the correctness of our position. Such reckon themselves among the chosen, peculiar people of God, yet they experience not His presence and power to save them from yielding to temptation and folly. These profess to know God, yet in works deny Him. How great is their darkness! The love of the world with many, the deceitfulness of riches with others, have choked the word, and they have become unfruitful. 2T 125.2"
"They profess that they know God; but in works they deny him, being abominable, and disobedient, and unto every good work reprobate."
EGW directly alludes to Titus 1:16, using the phrase "profess to know God, yet in works deny Him."
"He also that received seed among the thorns is he that heareth the word; and the care of this world, and the deceitfulness of riches, choke the word, and he becometh unfruitful."
The EGW passage directly references the concept of the deceitfulness of riches choking the word and making it unfruitful, which is a key element of Matthew 13:22. The language is very similar.