"An Epistle" gives the observations and opinions of Karshish, the
Arab physician, writing to Abib, his master, upon meeting with
Lazarus after he has been raised from the dead. Well versed in
Eastern medical lore, he tries to explain the extraordinary
phenomenon according to his knowledge. He attributes Lazarus'
version of the miracle to mania induced by trance, and the means
used by the Nazarene physician to awaken him, and strengthens his
view by describing the strange state of mind in which he finds
Lazarus--like a child with no appreciation of the relative values of
things. Through his renewal of life he had caught a glimpse of it
from the infinite point of view, and lives now only with the desire
to please God. His sole active quality is a great love for all
humanity, his impatience manifests itself only at sin and ignorance,
and is quickly curbed. Karshish, not able to realize this new plane
of vision in which had been revealed to Lazarus the equal worth of
all things in the divine plan, is incapable of understanding
Lazarus; but in spite of his attempt to make light of the case, he
is deeply impressed by the character of Lazarus, and has besides a
hardly acknowledged desire to believe in this revelation, told of by
Lazarus, of God as Love. Professor Corson says of this poem: "It
may be said to polarize the idea, so often presented in Browning's
poetry, that doubt is a condition of the vitality of faith."

17. Snakestone: a name given to any substance used as a remedy for
snake-bites; for example, some are of chalk, some of animal
charcoal, and some of vegetable substances.

28. Vespasian: Nero's general who marched against Palestine in 66,
and was succeeded in the command, when he was proclaimed Emperor
(70-79), by his son, Titus.