Thus, while apparently cut off from active labor, Paul exerted a wider and more lasting influence than if he had been free to travel among the churches as in former years. As a prisoner of the Lord, he had a firmer hold upon the affections of his brethren; and his words, written by one under bonds for the sake of Christ, commanded greater attention and respect than they did when he was personally with them. Not until Paul was removed from them, did the believers realize how heavy were the burdens he had borne in their behalf. Heretofore they had largely excused themselves from responsibility and burden bearing because they lacked his wisdom, tact, and indomitable energy; but now, left in their inexperience to learn the lessons they had shunned, they prized his warnings, counsels, and instructions as they had not prized his personal work. And as they learned of his courage and faith during his long imprisonment they were stimulated to greater fidelity and zeal in the cause of Christ. AA…
"And I will very gladly spend and be spent for you; though the more abundantly I love you, the less I be loved."
Both passages deal with the idea of sacrifice and service, and how suffering can paradoxically increase influence. Paul's statement in 2 Corinthians about being spent for others resonates with the idea that his imprisonment, though limiting in one sense, amplified his impact.
"Among Paul's assistants at Rome were many of his former companions and fellow workers. Luke, “the beloved physician,” who had attended him on the journey to Jerusalem, through the two years’ imprisonment at Caesarea, and upon his perilous voyage to Rome, was with him still. Timothy also ministered to his comfort. Tychicus, “a beloved brother, and a faithful minister and fellow servant in the Lord,” stood nobly by the apostle. Demas and Mark were also with him. Aristarchus and Epaphras were his “fellow prisoners.” Colossians 4:7-14 . AA 454.2"
"All my state shall Tychicus declare unto you, who is a beloved brother, and a faithful minister and fellowservant in the Lord: Whom I have sent unto you for the same purpose, that he might know your estate, and comfort your hearts; With Onesimus, a faithful and beloved brother, who is one of you. They shall make known unto you all things which are done here. Aristarchus my fellowprisoner saluteth you, and Marcus, sister’s son to Barnabas, (touching whom ye received commandments: if he come unto you, receive him;) And Jesus, which is called Justus, who are of the circumcision. These only are my fellowworkers unto the kingdom of God, which have been a comfort unto me. Epaphras, who is one of you, a servant of Christ, saluteth you, always labouring fervently for you in prayers, that ye may stand perfect and complete in all the will of God. For I bear him record, that he hath a great zeal for you, and them that are in Laodicea, and them in Hierapolis. Luke, the beloved physician, and Demas, greet you."
Ellen White directly references Colossians 4:7-14 in this passage.