Thou Art Thou, and Here Am I

Not, Lord, because I have done well or ill;
Not that my mind looks up to thee clear−eyed;
Not that it struggles in fast cerements tied;
Not that I need thee daily sorer still;
Not that I wretched, wander from thy will;
Not now for any cause to thee I cry,
But this, that thou art thou, and here am I.

~George MacDonald, Diary of an Old Soul