Intermediate between things possible and actual, some theologians assume a third class of events, namely, the conditionally future. They do not actually occur, but they would occur provided something else should occur. Had Christ come a thousand years sooner than the date of his actual advent, the whole history of the world would have been different. This is a popular mode of regarding the concatenation of events. It is constantly said, that if Cromwell had been permitted to leave England; or, if Napoleon had failed to escape from Elba, the state of Europe would have been very different from what it is at present.
God, it is assumed, knows what would have been the sequence of events on any or every possible hypothesis. It is therefore said that there must be in God, besides the knowledge of simple intelligence by which He knows the possible, and the knowledge of vision by which He knows the actual, a scientia media, by which He knows the conditionally future. Illustrations of this form of knowledge, it is thought, are found in Scripture. In 1 Samuel xxiii. 11, it is said that David inquired of the Lord whether the men of Keilah would deliver him, should he remain among them, into the hands of Saul; and was answered that they would. Here, it is argued, the event was not merely possible, but conditionally certain. If David remained in Keilah, he certainly would have been delivered up. Thus our Lord said, that if his mighty works had been done in Tyre and Sidon, the people of those cities would have repented. Here again is declared what would have happened, if something else had happened.
The Origin of this Distinction.
This distinction was introduced into theology by the Jesuit theologians Fonseca and Molina; by the latter in his work "De Concordia Providentiae et Gratiae Divinae cum Libero Arbitrio Hominis." Their object was to reconcile the foreordination of God with the freedom of man, and to explain the reason why some, and not others, were elected to eternal life. God foresaw who would repent and believe, if they received the knowledge of the Gospel and the gift of the Spirit, and these He elected to salvation.
This theory of a scientia media was, for a like purpose, adopted by the Lutheran and Remonstrant theologians, but was strenuously opposed by the Reformed or Augustinians.
(1.) Because all events are included under the categories of the actual and possible; and, therefore, there is no room for such a class as events conditionally future. It is only possible, and not certain, how men would act under certain conditions, if their conduct be not predeterminmod, either by the purpose of God, or by their own decision already formed. Besides, it is the fundamental principle of the theologians who adopt this theory, or at least of many of them, that a free act must from its nature be uncertain as to its occurrence. A free agent, it is said, can always act contrary to any amount of influence brought to bear upon him, consistent with his free agency. But if free acts must be uncertain, they cannot be foreseen as certain under any conditions. (2.) The futurition of events, according to the Scriptures, depends on the foreordination of God, whc foreordains whatever comes to pass. There is no certainty, therefore, which does not depend on the divine purpose. (3.) The kind of knowledge which this theory supposes cannot belong to God, because it is inferential. It is deduced from a consideration of second causes and their influence, and therefore is inconsistent with the perfection of God, whose knowledge is not discursive, but independent and intuitive. (4.) This theory is inconsistent with the Scriptural doctrine of God's providential government, as it assumes that the free acts of men are not under his control. (5.) It is contrary to the Scriptural doctrine, inasmuch as it supposes that election to salvation depends on the foresight of faith and repentance, whereas it depends on the good pleasure of God. (6.) The examples quoted from the Bible do not prove that there is a scientia media in God. The answer of God to David, about the men of Keilah, was simply a revelation of the purpose which they had already formed.
Our Lord's declaration concerning Tyre and Sidon was only a figurative mode of stating the fact that the men of his generation were more hardened than the inhabitants of those ancient cities. It is not denied that God knows all events in all possible combinationis and connections, but as nothing is certain but what he ordains to effect or permit, there can be no class of events conditionally future, and therefore there can be no scientia media. By conditionally future is meant what is suspended on a condition undetermined by God.