hearing.

For if a man have any presumption in his fantasies and in his
workings, and thereby falleth in to indiscreet imagination, as it
were in a frenzy, and is not ordered nor ruled of grace, nor
comforted by ghostly strength, the devil entereth in, and by his
false illuminations, and by his false sounds, and by his false
sweetnesses, he deceiveth a man's soul.

And of this false ground springeth errors, and heresies, false
prophecies, presumptions, and false reasonings, blasphemings, and
slanderings, and many other mischiefs. And, therefore, if thou see
any man ghostly occupied fall in any of these sins and these
deceits, or in frenzies, wete thou well that he never heard nor felt
angel's song nor heavenly sound. For, soothly, he that heareth
verily angel's song, he is made so wise that he shall never err by
fantasy, nor by indiscretion, nor by no slight[173] of working of
the devil.

Also, some men feel in their hearts as it were a ghostly sound, and
sweet songs in divers manners; and this is commonly good, and
sometime it may turn to deceit. This sound is felt on this wise.
Some man setteth the thought of his heart only in the name of Jesu,
and steadfastly holdeth it thereto, and in short time him thinketh
that that name turneth him to great comfort and sweetness, and him
thinketh that the name soundeth in his heart delectably, as it were
a song; and the virtue of this liking is so mighty, that it draweth
in all the wits of the soul thereto. Who so may feel this sound and
this sweetness verily in his heart, wete thou well that it is of
God,[174] and, as long as he is meek, he shall not be deceived. But