A sonnet about silence and rest

I forget what is required to make a poem a sonnet, but this sonnet by Frances Ridley Havergal is a good one. He writes about a silence with God that speaks. I read it while reading Dallas Willard's "Hearing God" which I think is a must-read book.

Love culminates in bliss when it doth reach
A white, unflickering, fear-consuming glow;
And, knowing it is known as it doth know,
Needs no assuring word or soothing speech.
It craves but silent nearness, so to rest,
No sound, no movement, love not heard but felt,
Longer and longer still, till time should melt,
A snow-flake on the eternal ocean's breast.
Have moments of this silence starred thy past,
Made memory a glory-haunted place,
Taught all the joy that mortal ken can trace?
By greater light 'tis but a shadow cast:
So shall the Lord thy God rejoice o'er thee,
And in His love will rest, and silent be.