"Strength We are to love God, not only with all the heart, mind, and soul, but with all the strength. This covers the full, intelligent use of the physical powers. COL 348"
"And thou shalt love the Lord thy God with all thy heart, and with all thy soul, and with all thy mind, and with all thy strength: this is the first commandment."
EGW directly quotes Mark 12:30 and then interprets the phrase 'with all thy strength' in the context of physical powers.
"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?"
While the EGW quote speaks of loving God with all one's strength, connecting it to the physical powers, the 1 Corinthians verse speaks of the body as a temple. The connection is thematic, as both relate to the body and its use in service to God, but it's not a direct allusion or principle. The confidence is lowered because the connection is somewhat general.
"All should have an intelligent knowledge of the human frame that they may keep their bodies in the condition necessary to do the work of the Lord. The physical life is to be carefully preserved and developed that through humanity the divine nature may be revealed in its fullness. The relation of the physical organism to the spiritual life is one of the most important branches of education. It should receive careful attention in the home and in the school. All need to become acquainted with their physical structure and the laws that control natural life. He who remains in willing ignorance of the laws of his physical being and who violates them through ignorance is sinning against God. All should place themselves in the best possible relation to life and health. Our habits should be brought under the control of a mind that is itself under the control of God. COL 348.1"
"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?"
Both passages emphasize the importance of the body in relation to spiritual life and serving God. 1 Corinthians 6:19 refers to the body as a temple, while EGW stresses the need to understand and care for the body to do God's work.
"Christ was a true worker in temporal as well as in spiritual things, and into all His work He brought a determination to do His Father's will. The things of heaven and earth are more closely connected and are more directly under the supervision of Christ than many realize. It was Christ who planned the arrangement for the first earthly tabernacle. He gave every specification in regard to the building of Solomon's temple. The One who in His earthly life worked as a carpenter in the village of Nazareth was the heavenly architect who marked out the plan for the sacred building where His name was to be honored. COL 348.4"
"But Jesus answered them, My Father worketh hitherto, and I work."
Both passages emphasize Jesus' active role in both spiritual and temporal realms. The EGW quote expands on this by specifically mentioning Christ's involvement in the design of the tabernacle and temple. The John 5:17 verse supports the idea of Jesus working alongside the Father.
"For this man was counted worthy of more glory than Moses, inasmuch as he who hath builded the house hath more honour than the house."
The EGW quote discusses Christ as the architect of the tabernacle and temple, while Hebrews 3:3 speaks of the builder of the house having more honor than the house itself. While not a direct quote, the thematic connection is clear: Christ's role as the builder/architect is being highlighted.