"Medical Missionaries and their Work They “shall be in the midst of many people as a dew from the Lord.” Chapter 9—Teaching and Healing MH 139 When Christ sent out the twelve disciples on their first missionary tour, He bade them, “As ye go, preach, saying, The kingdom of heaven is at hand. Heal the sick, cleanse the lepers, raise the dead, cast out devils: freely ye have received, freely give.” Matthew 10:7, 8 . MH 137"
"And the remnant of Jacob shall be in the midst of many people as a dew from the Lord, as the showers upon the grass, that tarrieth not for man, nor waiteth for the sons of men."
The EGW passage directly quotes Micah 5:7, attributing it to the role of medical missionaries. This is a clear and intentional allusion.