Christ has given us an example. He taught from the Scriptures the gospel truths, and He also healed the afflicted ones who came to Him for relief. He was the greatest physician the world ever knew, and yet He combined with His healing work the imparting of soul-saving truth. MM 247.3
And thus should our physicians labor. They are doing the Lord's work when they labor as evangelists, giving instruction as to how the soul may be healed by the Lord Jesus. Every physician should know how to pray in faith for the sick, as well as to administer the proper treatment. At the same time he should labor as one of God's ministers, to teach repentance and conversion, and the salvation of soul and body. Such a combination of labor will broaden his experience, and greatly enlarge his influence. MM 247.4
One thing I know, the greatest work for our physicians is to get access to the people of the world in the right way. There is a world perishing in sin, and who will take up the work in our cities? The greatest physician is the one who walks in the footsteps of Jesus Christ.—Counsels on Health, 544. MM 247.5