Adam Clarke on 1 Kings 9:2

The Lord appeared to Solomon - The design of this appearance, which was in a dream, as that was at Gibeon, was to assure Solomon that God had accepted his service, and had taken that house for his dwelling-place, and would continue it, and establish him and his descendants upon the throne of Israel for ever, provided they served him with an upright heart; but, on the contrary, if they forsook him, he would abandon both them and his temple.