Remember the part of the doctrine of vocation that stresses how God is present in vocation. That means that when people serve us, in the course of everyday life and everyday economics, God is serving us through them. We should be grateful to those–in farms and factories and stores and in the family kitchen–who make our Thanksgiving feast. And we should be grateful to God who is providing for us through them and for giving them to us. And God looms behind all of the other people and institutions that bless us.