John 2:25 Commentary - Expository Notes with Practical Observations on the New TestamentSt. John's design in writing of this gospel being to assert the divinity of Christ, he scatters evidences of it in almost every chapter. Here he declares his omniscience, He knew what was in man; that is, being God blessed for ever, he had an exact knowledge of the hearts of men, not by any revelation of men's hearts from God, but by immediate intuition from himself. He knows all men, and all that is in men. See here an ample testimony of the divinity of Christ, his knowledge of the secrets of the hearts of all men, which is declared to be the undoubted property of God alone, Thou only knowest the hearts of all the children of men. 1Ki 8:39
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Expository Notes with Practical Observations on the New Testament
William Burkitt (1650 - 1703) was a Church of England clergyman, bible expositor, and devotional writer.
Volume 1: Matthew - John, was published in 1700.
Volume 2: Acts - Revelation was published 1703.