Charles Hodge on Ephesians 3:14-21

14. For this cause I bow my knees unto the Father of our Lord Jesus Christ, 15. of whom the whole family in heaven and earth is named, 16. that he would grant you, according to the riches of his glory, to be strengthened with might by his Spirit in the inner man; 17. that Christ may dwell in your hearts by faith: that ye, being rooted and grounded in love, 18. may be able to comprehend with all saints what is the breadth, and length, and depth, and height; 19. and to know the love of Christ, which passeth knowledge, that ye might be filled with all the fulness of God. 20. Now unto him that is able to do exceeding abundantly above all that we ask or think, according to the power that worketh in us, 21. unto him be glory in the church by Christ Jesus throughout all ages, world without end. Amen.

The prayer of the apostle is addressed to the Father of our Lord Jesus Christ, who is also in him our Father. He offers but one petition, viz. that his readers might be strengthened by the Holy Ghost in the inner man; or that Christ might dwell in their hearts by faith. The consequence of this would be, that they would be confirmed in love, and thus enabled in some measure to comprehend the infinite love of Christ, which would enlarge their capacity unto the fulness of God; that is, ultimately render them, in their measure, as full of holiness and blessedness, as God is in his.