The verse measures nearness by a vein: the vein through which life flows, the one whose severing ends everything.
Even that vein is farther from a person than He is.

A person travels far, draws maps, knocks on doors; yet what they seek is nearer than the beat of their own pulse.
Perhaps this is the greatest secret of the Hidden Treasure: where it hides is not far, but too near.

The eye cannot see its own eyelash.