"Every one who accepts Christ as his personal Saviour will long for the privilege of serving God. Contemplating what Heaven has done for him, his heart is moved with boundless love and adoring gratitude. He is eager to signalize his gratitude by devoting his abilities to God's service. He longs to show his love for Christ and for his purchased possession. He covets toil, hardship, sacrifice. GW 294.1"
"If ye love me, keep my commandments."
The EGW passage directly illustrates the principle stated in John 14:15. The passage expands on the idea that love for Christ motivates obedience and service.
"The true worker for God will do his best, because in so doing he can glorify his Master. He will do right in order to regard the requirements of God. He will endeavor to improve all his faculties. He will perform every duty as unto God. His one desire will be that Christ may receive homage and perfect service. GW 294.2"
"Whether therefore ye eat, or drink, or whatsoever ye do, do all to the glory of God."
The EGW passage is a clear application of the principle in 1 Corinthians 10:31. It emphasizes doing everything, including work, to glorify God.
"There is a picture representing a bullock standing between a plow and an altar, with the inscription “Ready for either”—ready to toil in the furrow, or to be offered on the altar of sacrifice. This is the position of the true child of God—willing to go where duty calls, to deny self, to sacrifice for the Redeemer's cause.— The Ministry of Healing, 497-502 . GW 294.3"
"I beseech you therefore, brethren, by the mercies of God, that ye present your bodies a living sacrifice, holy, acceptable unto God, which is your reasonable service."
Both passages emphasize dedication and sacrifice to God. The EGW passage uses the image of a bullock ready for work or sacrifice, while Romans 12:1 calls for presenting our bodies as a living sacrifice. The themes are closely aligned.