Power & strength to know Christ

In one sense, knowing Christ is not hard; you simply turn to him in faith. There's plenty of evidence on which to base that faith, so it's no leap in the dark. It's just the logical conclusion of an inquring mind.
But it's not. It's not because we're not rational, logical computers. We're sinful, rebellious human beings who, when it comes to Christ, fail to see and so to trust the evidence. Our sin blinds us to what is sensible, persuades us that we know best, and loves to persist in the self-service that makes 'me' god.
It is only the power of the Spirit working through the message of Christ and him crucified that can reveal true wisdom and knowledge to us (see 1 Cor 1). But even as Christians we never cease to depend on the power of God to keep us believing the truth.

I bow my knees before the Father... that according to the riches of his glory he may grant you to be strengthened with power through his Spirit in your inner being, so that Christ may dwell in your hearts through faith—that you, being rooted and grounded in love, may have strength to comprehend with all the saints what is the breadth and length and height and depth, and to know the love of Christ that surpasses knowledge, that you may be filled with all the fullness of God.

How does Christ continue to dwell in our hearts? Through faith? Yes, but even that requires the power of God to be at work in us - we have to be strengthened with power through the Spirit in our inner being if we're to continue to have Christ dwelling in our hearts. It's only by the power of God that we can know the astonishing extent of the love of Christ because that love 'surpasses knowledge' - human knowledge cannot grasp the fact that Christ would love us so much as to die for our sins under the full force of the wrath of God. We need God's 'strength to comprehend' this (v18).
And so Paul bursts into praise as he contemplates the glory of what God has done, and will do, for us and in us:

Now to him who is able to do far more abundantly than all that we ask or think, according to the power at work within us, to him be glory in the church and in Christ Jesus throughout all generations, forever and ever. Amen.

 In the context of Ephesians, what 'God is able to do far more abundantly... according to his power at work within us' must surely refer to knowing Christ. For it is by knowing Christ that we are united under him and God fulfils his eternal plan for creation (cf 1:7-10; 2:13ff; 4:1-7, 13, 15-16 etc).
But is this what we think of when we pray this prayer, perhaps at the end of a Sunday gathering? Do we realise that the prayer is praising God for doing what is beyond our comprehension - keeping us and uniting us in the knowledge and love of Christ?