The Difficulty of Faith; how hard it is to attain.

Naturally men do imagine it the easiest of all things
else required in us to salvation, that it is the easiest thing of all the
rest to believe, and they wonder that any should make any difficulty
in it. Men think if they could but do other things as well as believe,
they should do well enough. To pray, and to keep the Sabbath, and to
part with lusts and beloved sins, these things indeed are hard and
difficult, and to a man impossible; but to believe in Christ for
salvation, this they make nothing of; and whatever they do, they will
surely believe and never despair; and if they come to a poor soul that
is any whit troubled, they rate him, and use to say, Thou art a fool
indeed, canst not believe? And hence of all works else men mind this
of faith the least.