John Wesley on Ephesians 1:17

That the Father of that infinite glory which shines in the face of Christ, from whom also we receive the glorious inheritance, Eph 1:18, may give you the Spirit of wisdom and revelation - The same who is the Spirit of promise is also, in the progress of the faithful, the Spirit of wisdom and revelation; making them wise unto salvation, and revealing to them the deep things of God. He is here speaking of that wisdom and revelation which are common to all real Christians.