1 Kings 3:25 - Joseph Benson’s Commentary on the Old and New Testaments

The king said With seeming sincerity, though with a design far above the reach of the two women, or of the people present, who probably with horror expected the execution of his sentence. “Solomon knew at once that the only sign whereby to discover the true mother, would be her affection, and compassionate tenderness for her child; and therefore, in order to distinguish between the two, his business was to make trial of this. And if we suppose that, when he commanded the child to be divided, he spake with a sedate countenance and seeming earnestness, as the true mother's petition to the king makes it apparent that he did; then we may suppose further, not only the two women, but all the people present, with dread and admiration expecting the execution of the thing; which when it ended in so just a decision, quite contrary to what they looked for, raised joy in every breast, and gave a more advantageous commendation to the judge. And yet Abarbinel, the Jewish commentator, thinks that all this was no great proof of Solomon's extraordinary wisdom, nor could it beget that fear or reverence which the text (says 1Ki 3:28) it procured to his person. His opinion, therefore, is, that Solomon made a discovery of the truth antecedent to this experiment; that by observing the countenance, the manner of speech, and all the motions of the women, he discerned the secret of their hearts, and penetrated to the bottom of the business; and that his commanding the child to be divided afterward was only to notify to the company what he before had discovered.” See Patrick and Calmet.