John 2:25 - Matthew Poole's English Annotations on the Holy Bible

And needed not any information concerning the principles and humours of all men; for he perfectly knew men, not only from their more external acts and behaviours, (as we know them), but he knew what was in them, searching the hearts, and trying the reins, which is the property of God alone, 1 Kings 8:39 Psalms 33:15. Here what we formerly observed is again observable, that oft times in holy writ, for the further confirmation of a proposition, to a universal affirmative is added a contrary negative. Here ariseth a question, agitated between the Lutherans and the Calvinists, Whether Christ as man knew all things, and what is in the heart of man. They affirm it, because of the personal union of the Divine and human natures in Christ. We say, that although there be such a personal union, yet the properties of each nature remain distinct; upon which account Christ denieth that he, as the Son of man, knew the day and hour of the end of the world. Besides, by the same reason that omniscience belongeth to the human nature of Christ, omnipotence, infiniteness, and omnipresence, also must; which last indeed they affirm, seeing that without it they were not able to defend their doctrine of consubstantiation, or the presence of the body and blood of Christ, wherever the sacrament of his supper is administered; but this being a matter polemical, we shall not here discourse it. Those who would be satisfied as to what is said on either side, may find enough in Gerard, Hunnius, and Farnovius, on the Lutherans side; and in Zanchius and others on the Calvinists side, Zanchius de Natura and Attributis Dei, lib. 3. cap. 2. qu. 16.