"“Whosoever is born of God doth not commit sin.” He feels that he is the purchase of the blood of Christ and bound by the most solemn vows to glorify God in his body and in his spirit, which are God's. The love of sin and the love of self are subdued in him. He daily asks: “What shall I render unto the Lord for all His benefits toward me?” “Lord, what wilt Thou have me to do?” The true Christian will never complain that the yoke of Christ is galling to the neck. He accounts the service of Jesus as the truest freedom. The law of God is his delight. Instead of seeking to bring down the divine commands, to accord with his deficiencies, he is constantly striving to rise to the level of their perfection. 5T 220.1"
"Whosoever is born of God doth not commit sin; for his seed remaineth in him: and he cannot sin, because he is born of God."
The EGW passage directly quotes 1 John 3:9, making it an explicit allusion. The surrounding text elaborates on the implications of being born of God and not committing sin.
"What? know ye not that your body is the temple of the Holy Ghost which is in you, which ye have of God, and ye are not your own? For ye are bought with a price: therefore glorify God in your body, and in your spirit, which are God’s."
The EGW passage alludes to 1 Corinthians 6:19-20 by stating "glorify God in his body and in his spirit, which are God's" and "He feels that he is the purchase of the blood of Christ". This is a clear reference to the concept of the body being a temple and being bought with a price.