Concerning Galilee, I observed in my Easter sermon:
After they confirm the empty tomb, they are sent to Galilee. Matthew tends to place emphasis on Galilee. The reason he does so, is to contrast it with Jerusalem. Jerusalem is the place where Jesus meets rejection and death, but Galilee is the place where Jesus finds peace. According to one commentator, it is the place where “the light dawns.” Jesus is taking them to a new place; a place of safety and refuge, as they begin to live in light of His resurrected presence.
Following the service, Jim Jordan observed that Jerusalem is also Egypt, and Galilee is in northern Israel, also indicating the contrast.
My wife observed also that Galilee is mentioned in this account as another evidence that the gospel is going to all the nations of the earth.