Verses 16, 17

It is more than glory that is spoken of here; it is the fullness of the riches of His glory. This is what the apostle desires for them, in contrast with a Messiah in the midst of the people: "That Christ may dwell in your hearts by faith." Christ, set in glory, brings the Gentiles into it, and this is how we have part in these riches; but in order to enjoy them, He must dwell in our hearts. The moment that God exalted Christ the link with every family in heaven and on the earth was manifested and even formed, for it was new. The portion of the Gentiles, as well as the whole church, is to be united to Christ Himself, of whom every family is named (verse 15), He is Head of the church, the manifest center of the glory of God. The apostle desires that the efficacy of this power should be in us; not only that grace which comforts and which is most precious, but likewise that we should realize Christ exalted.
As Son of God, Christ is the first name in this family which the Spirit reveals to us, that Spirit by whom we are strengthened in the inner man; for our feeble hearts, though they are converted to God, would be incapable without His help of entering into this glory and the extent of these counsels; the trials of the flesh are not an obstacle to our realizing these things, the more the apostle suffered as prisoner, the more he entered into this mystery of the glory of Christ. His imprisonment was the cause of this epistle, as well as those to the Colossians, Philippians, and others: it is thus that God provides for the needs of His church. We ought so to lay hold of Christ glorified, as that He should be there with us; His presence ought to be realized and acted on constantly in the heart.
Verse 18.
The thought from the beginning of the epistle is not of Christ as making satisfaction to the justice of God; but that power, that flow of love for the accomplishing certain counsels of grace, of which he is the fullness for us. Then Paul desires that having understood the accomplishment of this thought in the person of Christ, we should understand the power of this mighty love which has glorified Christ by linking His glory with the blessing of poor sinners. When we apprehend these things, we understand that all is love, and that we ought to live upon the love which has done all.
It is by entering into the love which is the source of it, that we understand the immeasurable expanse which is spoken of in verse 18; that love of God whose thought is to put all things in subjection to Christ, and to glorify the church with Him. When we have understood this love, we can, in a certain sense, measure the ways of God which have brought us in there where God displays Himself, for it is not told us of what he is describing the height, the breadth, the depth and length; but it is love which 'has introduced us and orders all things. The Spirit includes the whole church, which is very nigh to God in this glory; it is impossible that any of its members should be set aside.