This is a beautiful song, telling a simple story, allowing much room for imagination. Who is the traveler? Where are they going? Who is the father, mother, and child?
Do we seek the welfare of the stranger? Asking for God’s mercy upon those we do not know, that we only perceive from far away, perhaps only knowing that they are road-weary and in need of rest?
You could apply the imagery in this song to many scenarios, maybe even this one. There are others, not as politically charged, but nonetheless suitable, for wherever we see the stranger traveling the road, we must always remember mercy and never forget that we also were once without a home, without rest, until God chose to grant an everlasting mercy, rest, and hospitality to us.