From the book A Course In Miracles (ACIM):

A miracle is a correction. It
does not create, nor really change at all.
It merely looks on devastation, and
reminds the mind that what it sees is false.
It undoes error, but does not attempt
to go beyond perception, nor exceed
the function of forgiveness. Thus it stays
within time’s limits. Yet it paves the way
for the return of timelessness and love’s
awakening, for fear must slip away
under the gentle remedy it gives.

A miracle contains the gift of grace,
for it is given and received as one.
And thus it illustrates the law of truth
the world does not obey, because it fails
entirely to understand its ways.
A miracle inverts perception, which
was upside-down before, and thus it ends
the strange distortions that were manifest.
Now is perception open to the truth.
Now is forgiveness fully justified.

Forgiveness is the home of miracles.
The eyes of Christ delivers them to all
they look upon in mercy and in love.
Perception stands corrected in His sight,
and what was meant to curse has come to bless.
Each lily of forgiveness offers all
the world the silent miracle of love.
And each is laid before the Word of God
upon the universal altar to
Creator and creation, in the Light
of perfect purity and endless peace.

The miracle is taken first on faith,
because to ask for it implies the mind
has been made ready to conceive of what
it cannot see and does not understand.
Yet faith will bring its witnesses, to show
that what it rested on is really there.
And thus the miracle will justify your faith
in it, and show it rested on a world
more real than what you saw before;
a world redeemed from what you thought you saw.

Miracles fall like drops of healing rain
from Heaven on a dry and dusty world,
where starved and thirsty creatures came to die.
Now have they water. Now the world is green.
And everywhere the signs of life spring up,
to show that what is born can never die,
for what has life has immortality.