We may illustrate the need of internal revelation from Egyptology, which is impossible so long as the external revelation in the hieroglyphics is uninterpreted; from the ticking of the clock in a dark room, where only the lit candle enables us to tell the time; from the landscape spread out around the Rigi in Switzerland, invisible until the first rays of the sun touch the snowy mountain peaks. External revelation (φανέρωσις, _Rom. 1:19, 20_) must be supplemented by internal revelation (ἀποκάλυψις, _1 Cor. 2:10, 12_). Christ is the organ of external, the Holy Spirit the organ of internal, revelation. In Christ (_2 Cor. 1:20_) are “the yea” and “the Amen”—the objective certainty and the subjective certitude, the reality and the realization. Objective certainty must become subjective certitude in order to be a scientific theology. Before conversion we have the first, the external truth of Christ; only at conversion and after conversion do we have the second, “Christ formed in us”_ (Gal. 4:19)_. We have objective revelation at Sinai (_Ex. 20:22_); subjective revelation in Elisha’s knowledge of Gehazi (_2 K. 5:26_). James Russell Lowell, Winter Evening Hymn to my Fire: “Therefore with thee I love to read Our brave old poets: at thy touch how stirs Life in the withered words! how swift recede Time’s shadows! and how glows again Through its dead mass the incandescent verse, As when upon the anvil of the brain It glittering lay, cyclopically wrought By the fast throbbing hammers of the poet’s thought!” (_e_) Internal revelations thus recorded, and external revelations thus interpreted, both furnish objective facts which may serve as proper material for science. Although revelation in its widest sense may include, and as constituting the ground of the possibility of theology does include, both insight and illumination, it may also be used to denote simply a provision of the external means of knowledge, and theology has to do with inward revelations only as they are expressed in, or as they agree with, this objective standard.