Ephesians 3:14-21 is over the top. Paul is overwhelmed by the love, power and sheer goodness of God which ‘surpasses knowledge’.
It’s only by God’s gift that we can begin to comprehend his love. Again Paul’s language is Trinitarian – with the Trinity being seen in a dynamic experience of God, not as some abstract ‘out there’ concept.
Paul prays to the Father on bended knee, that he might strengthen us by the Spirit, so that in turn Christ may dwell in our hearts through faith as we grow in love and are filled with the fulness of God.
So if you want to know more of God’s love, pray for strength to love, and to live as part of his family in unity and service to others.