"Paul never forgot the responsibility resting on him as a minister of Christ, or that if souls were lost through unfaithfulness on his part, God would hold him accountable. “Whereof I am made a minister,” he declared of the gospel, “according to the dispensation of God which is given to me for you, to fulfill the word of God; even the mystery which hath been hid from ages and from generations, but now is made manifest to His saints: to whom God would make known what is the riches of the glory of this mystery among the Gentiles; which is Christ in you, the hope of glory: whom we preach, warning every man, and teaching every man in all wisdom; that we may present every man perfect in Christ Jesus: whereunto I also labor, striving according to His working, which worketh in me mightily.” Colossians 1:25-29 . AA 368.2"
"Whereof I am made a minister, according to the dispensation of God which is given to me for you, to fulfil the word of God; Even the mystery which hath been hid from ages and from generations, but now is made manifest to his saints: To whom God would make known what is the riches of the glory of this mystery among the Gentiles; which is Christ in you, the hope of glory: Whom we preach, warning every man, and teaching every man in all wisdom; that we may present every man perfect in Christ Jesus: Whereunto I also labour, striving according to his working, which worketh in me mightily."
Ellen White directly references Colossians 1:25-29 in this passage.
"These words present before the worker for Christ a high attainment, yet this attainment all can reach who, putting themselves under the control of the Great Teacher, learn daily in the school of Christ. The power at God's command is limitless, and the minister who in his great need shuts himself in with the Lord may be assured that he will receive that which will be to his hearers a savor of life unto life. AA 368.3"
"Take my yoke upon you, and learn of me; for I am meek and lowly in heart: and ye shall find rest unto your souls."
The EGW passage speaks of learning in the school of Christ and receiving power, which aligns with the concept of taking Christ's yoke and learning from Him in Matthew 11:29. The connection is thematic and not a direct quote, but the underlying principle is similar.