"The time has come when a large portion of those who once rejoiced and shouted aloud for joy in view of the immediate coming of the Lord, are on the ground of the churches and the world who once derided them for believing that Jesus was coming, and circulated all manner of falsehoods to raise prejudice against them and destroy their influence. Now, if any one longs after the living God, hungering and thirsting for righteousness, and God gives him to feel His power, and satisfies his longing soul by shedding abroad His love in his heart, and if he glorifies God by praising Him, he is, by these professed believers in the soon coming of the Lord, often considered deluded, and charged with being mesmerized or having some wicked spirit. EW 108.1"
"If ye were of the world, the world would love his own: but because ye are not of the world, but I have chosen you out of the world, therefore the world hateth you."
The EGW passage describes the rejection and persecution faced by those who are truly seeking God, mirroring the sentiment in John 15:19 that the world hates those who are not of it.
"Many of these professed Christians dress, talk, and act like the world, and the only thing by which they may be known is their profession. Though they profess to be looking for Christ, their conversation is not in heaven, but on worldly things. “What manner of persons” ought those to be “in all holy conversation and godliness,” who profess to be “looking for and hasting unto the coming of the day of God.” 2 Peter 3:11, 12 . “Every man that hath this hope in him purifieth himself, even as He is pure.” 1 John 3:3 . But it is evident that many who bear the name of Adventist study more to decorate their bodies and to appear well in the eyes of the world than they do to learn from the Word of God how they may be approved of Him. EW 108.2"
"And every man that hath this hope in him purifieth himself, even as he is pure."
Ellen White directly references 1 John 3:3 in this passage.
"For our conversation is in heaven; from whence also we look for the Saviour, the Lord Jesus Christ:"
EGW directly alludes to Philippians 3:20, contrasting the heavenly conversation with worldly concerns, and applies it to those professing to look for Christ.
"Love not the world, neither the things that are in the world. If any man love the world, the love of the Father is not in him."
The EGW passage discusses the worldliness of some professed Christians, which aligns with the warning in 1 John 2:15 against loving the world and its values.