AC 3901 - Isaiah 40:31

AC 3901 [2]
They that wait upon Jehovah shall be renewed in strength,
they shall mount up with strong wing as eagles,
they shall run and not be weary,
they shall walk and not faint.
(Isaiah 40:31)

"To be renewed in strength"
is to grow as to the willing of good;
and "to mount up with strong wing as eagles"
is to grow as to the understanding of truth, thus as to the rational.
The subject is set forth here as elsewhere by two expressions,
one of which involves the good which is of the will,
and the other the truth which is of the understanding;
and the case is the same with the expressions,
"they shall run and not be weary, and shall walk and not faint."