"True sanctification comes through the working out of the principle of love. “God is love; and he that dwelleth in love dwelleth in God, and God in him.” 1 John 4:16 . The life of him in whose heart Christ abides, will reveal practical godliness. The character will be purified, elevated, ennobled, and glorified. Pure doctrine will blend with works of righteousness; heavenly precepts will mingle with holy practices. AA 560.1"
"And we have known and believed the love that God hath to us. God is love; and he that dwelleth in love dwelleth in God, and God in him."
Ellen White directly references 1 John 4:16 in this passage.
"Those who would gain the blessing of sanctification must first learn the meaning of self-sacrifice. The cross of Christ is the central pillar on which hangs the “far more exceeding and eternal weight of glory.” “If any man will come after Me,” Christ says, “let him deny himself, and take up his cross, and follow Me.” 2 Corinthians 4:17 ; Matthew 16:24 . It is the fragrance of our love for our fellow men that reveals our love for God. It is patience in service that brings rest to the soul. It is through humble, diligent, faithful toil that the welfare of Israel is promoted. God upholds and strengthens the one who is willing to follow in Christ's way. AA 560.2"
"For our light affliction, which is but for a moment, worketh for us a far more exceeding and eternal weight of glory;"
EGW directly quotes 2 Corinthians 4:17.
"Then said Jesus unto his disciples, If any man will come after me, let him deny himself, and take up his cross, and follow me."
EGW directly quotes Matthew 16:24.
"Sanctification is not the work of a moment, an hour, a day, but of a lifetime. It is not gained by a happy flight of feeling, but is the result of constantly dying to sin, and constantly living for Christ. Wrongs cannot be righted nor reformations wrought in the character by feeble, intermittent efforts. It is only by long, persevering effort, sore discipline, and stern conflict, that we shall overcome. We know not one day how strong will be our conflict the next. So long as Satan reigns, we shall have self to subdue, besetting sins to overcome; so long as life shall last, there will be no stopping place, no point which we can reach and say, I have fully attained. Sanctification is the result of lifelong obedience. AA 560.3"
"Knowing this, that our old man is crucified with him, that the body of sin might be destroyed, that henceforth we should not serve sin."
Both passages discuss the idea of putting to death the 'old man' or sinful nature. EGW expands on the lifelong process of this 'dying to sin' which aligns with the concept of crucifying the old man.
"I am crucified with Christ: nevertheless I live; yet not I, but Christ liveth in me: and the life which I now live in the flesh I live by the faith of the Son of God, who loved me, and gave himself for me."
Both passages discuss the idea of being 'crucified with Christ' and living a life empowered by Christ. EGW's statement about 'constantly dying to sin, and constantly living for Christ' directly echoes the sentiment in Galatians 2:20.