"But Paul did not regard as lost the time thus spent. As he worked with Aquila, he kept in touch with the great Teacher, losing no opportunity of witnessing for the Saviour, and of helping those who needed help. His mind was ever reaching out for spiritual knowledge. He gave his fellow-workers instruction in spiritual things, and he also set an example of industry and thoroughness. He was a quick, skilful worker, diligent in business, “fervent in spirit, serving the Lord.” [ Romans 12:11 .] As he worked at his trade, the apostle had access to a class of people that he could not otherwise have reached. He showed his associates that skill in the common arts is a gift from God, who provides both the gift, and the wisdom to use it aright. He taught that even in every-day toil, God is to be honored. His toil-hardened hands detracted nothing from the force of his pathetic appeals as a Christian minister.... GW 236.1"
"Not slothful in business; fervent in spirit; serving the Lord;"
Ellen White directly references Romans 12:11 in this passage.