Matthew Poole and continuators on Ephesians 1:9

9 Having made known unto us the mystery of his will according to his good pleasure which he hath purposed in himself .

Having revealed to us outwardly by the Preaching of the Gospel; inwardly by the Illumination of the Spirit.

The whole Doctrine of Grace and Salvation by Christ, which is a secret to others, and had still been so to us, had not God discovered it to us in the Gospel.

The good pleasure of God, is the fountain of all spiritual Blessings which flow out to us, aswell as it is of our being first chosen and appointed to be the Subjects of them.

This signifies a firm setled will in God, either meerly of God, and moved by nothing out of himself, or his keeping this purpose in himself till the time appointed for the publication of it.

Marginal references: Rom. 16.25. Col. 1.26.