86. So, then, their desire is to prove that there is some difference of substance, being anxious to make a distinction between as it were the instrument, and the proper worker or author, and also between time or place and the instrument. But is the Son, then, alien as regards His Nature from the Father, because an instrument is alien from the worker or author? or is the Son alien from the Spirit, because either time or place is not of the same class as an instrument?