Vision is the aspirational self-image  guiding you to the future. 

Ephesus’ self-image was that of a guardian of the temple of the great Artemis. 

Paul cast a vision for the church at Ephesus. They are to be a people, a family, and ultimately a temple 

The church’s aspiration self image is that of a temple

Contextually temples are the way people encounter God

Guides them into the future by forming an close community empowered by the Holy Spirit.