cannot enter into the Kingdom
of God. That which is born of the flesh is flesh; and that which is born
of the Spirit is Spirit. Marvel not that I said unto you, ye must be
born again."[37] Why did He add _Marvel not_? Did He seek to allay the
fear in the bewildered ruler's mind that there was more in this novel
doctrine than a simple analogy from the first to the second birth?

The attitude of the natural man, again, with reference to the Spiritual,
is a subject on which the New Testament is equally pronounced. Not only
in his relation to the spiritual man, but to the whole Spiritual World,
the natural man is regarded as _dead_. He is as a crystal to an
organism. The natural world is to the Spiritual as the inorganic to the
organic. "To be carnally minded is _Death_."[38] "Thou hast a name to
live, but art _Dead_."[39] "She that liveth in pleasure is _Dead_ while
she liveth."[40] "To you he Hath given Life which were _Dead_ in
trespasses and sins."[41]

It is clear that a remarkable harmony exists here between the Organic
World as arranged by Science and the Spiritual World as arranged by
Scripture. We find one great Law guarding the thresholds of both worlds,
securing that entrance from a lower sphere shall only take place by a
direct regenerating act, and that emanating from the world next in order
above. There are not two laws of Biogenesis, one for the natural, the
other for the Spiritual; one law is for both. Wherever there is Life,
Life of any kind, this same law holds. The analogy, therefore, is only
among the phenomena; between laws there is no analogy--there is
Continuity. In either case, the first step in peopling these worlds
with the appropriate living forms is virtually miracle. Nor in one case
is there less of mystery in the act than in the other. The second birth
is scarcely less perplexing to the theologian than the first to the
embryologist.

A moment's reflection ought now to make it clear why in the Spiritual
World there had to be added to this mystery the further mystery of its
proclamation through the medium of Revelation. This is the point at
which the scientific man is apt to part company with the theologian. He
insists on having all things materialized before his eyes in Nature. If
Nature cannot discuss this with him, there is nothing to discuss. But
Nature can discuss this with him--only she cannot open the discussion or
supply all the material to begin with. If Science averred that she could