Charles Hodge on Ephesians 1:20

V. 20. Which he wrought in Christ when he raised him from the dead, ἣν ἐνήργησεν, κτλ. There are two things evidently intended in these words. First, that the power which raises the believer from spiritual death, is the same as that which raised Christ from the, grave. And secondly, that there is a striking analogy between these events and an intimate connection between them. The one was not only the symbol, but the pledge and procuring cause of the other. The resurrection of Christ is both the type and the cause of the spiritual resurrection of his people, as well of their future rising from the grave in his glorious likeness. On this analogy and connection the apostle speaks at large in Rom. 6, 1-10, and also in the following chapters of this epistle. As often therefore as the believer contemplates Christ as risen and seated at the right hand of God, he has at once an illustration of the change which has been effected in his own spiritual state, and a pledge that the work commenced in regeneration shall be consummated in glory.

And caused him to sit at his own right hand in the heavenly places. Kings place at their right hand those whom they design to honour, or whom they associate with themselves in dominion. No creature can be thus associated in honour and authority with God, and therefore to none of the angels hath he ever said: Sit thou at my right hand. Heb. 1, 13. That divine honour and authority are expressed by sitting at the right hand of God, is further evident from those passages which speak of the extent of that dominion and of the nature of that honour to which the exalted Redeemer is entitled. It is an universal dominion. Matt. 28, 18. Phil. 2, 9. 1 Pet. 3, 22; and it is such honour as is due to God alone. John 5, 23.