God’s heart for us is one of mercy, love, and grace. Our great need is to grasp this with our hearts and minds. So Paul prays that you:
“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.” – Ephesians 3:18-19a
We need strength to comprehend his love. A few verses earlier, Paul makes clear that this strength comes from the Spirit – so we need God’s help to grasp his love.
We need to comprehend his love – how broad and long and high and deep God’s love for us is. We need to know this love…which surpasses knowledge. To know what is unknowable. To grasp what is ungraspable. The point is that God’s love is too deep to fathom. We can always go deeper. We can always reach higher. We can always move further. We can always grasp more and more because there always is more.
And so we pray that we might each day know his love a little more. Grasp a little more. Comprehend a little more.
May this be our prayer…and our experience!
Brian J. Mikul 
I can’t remember exactly how this goes, but there is a quote that goes something like this:
The Bible is deep enough that the greatest theologian can dive in and never touch bottom, yet shallow enough for a child to wade in.
God’s love – the same.