Matthew Poole and continuators on 1 Kings 11:40

40 Solomon sought therefore to kill Jeroboam: and Jeroboam arose, and fled into Egypt, unto Shishak king of Egypt , and was in Egypt until the death of Solomon.

To whose ears this might come, either 1. by Ieroboam himself, who might speak of this, either out of vain-glory and ostentation; or, with design to prepare the People for his purpose. Or, 2. By the Servants. See above on ver. 29.

Who was either, first, Solomon's Brother-in-law, who yet might be jealous of him, or alienated from him, because he had taken so many other Wives to his Sister, as is here noted ver. 1. or, might cast a greedy eye upon the great riches and glorious things which Solomon had amassed together, and upon which, presently after Solomon's Death, he laid Violent hands, 2 Chron. 12. 9. All this was known to Ieroboam, who therefore durst put himself into Shishak's Protection; especially, considering how little such Relations commonly signifie in the Affairs of Princes; and withal, being made confident by God's Promise of the Kingdom. Or, 2. One of another Line or House, to whom that Crown might Descend for want of Issue.