unapprehensible

Which assertions, in spite of all qualifications of them, leave it unapprehensible what place can reasonably he left for addressing exhortations to the will, when it is not at all in its power to proceed to the performance of the thing to which it is exhorted, but solely in the power of him that exhorts.

Sermons Preached Upon Several Occasions. Vol. V. 1634-1716 1823

Creator, the realizing life to all things fair and true and good: and more especially would we revert to its spiritual purity, emphatically manifested through all its manifold operations, -- so impossible of alliance with any thing sordid, or false, or wicked, -- so unapprehensible, even, except for its own most sinless sake.

Lectures on Art Washington Allston 1811