The document discusses how Ephesians 1 teaches that God blesses believers with every spiritual blessing through Christ for the purpose of building grace-based churches. It highlights how God's grace permeates all of creation but that his spiritual blessings are specifically channeled through churches, which are described as Christ's body where he fills and rules over all things. The passage from Ephesians 1:22-23 is cited to support this, showing how God appointed Christ as head of all things for the benefit and fullness of the church.