And thy servant is in the midst of thy people which thou hast chosen, a great people, that cannot be numbered nor counted for multitude.

Wesley's Notes

3:8 In the midst - Is set over them to rule and guide them. A metaphor from the overseer of divers workmen, who usually is in the midst of them, that he may the better observe how each of them discharges his office. Chosen - Thy peculiar people, whom thou takest special care of, and therefore wilt expect a more punctual account of my government of them.

Matthew Henry's Concise Commentary

3:5-15 Solomon's dream was not a common one. While his bodily powers were locked up in sleep, the powers of his soul were strengthened; he was enabled to receive the Divine vision, and to make a suitable choice. God, in like manner, puts us in the ready way to be happy, by assuring us we shall have what we need, and pray for. Solomon's making such a choice when asleep, and the powers of reason least active, showed it came from the grace of God. Having a humble sense of his own wants and weakness, he pleads, Lord, I am but a little child. The more wise and considerate men are, the better acquainted they are with their own weakness, and the more jealous of themselves. Solomon begs of God to give him wisdom. We must pray for it, Jas 1:5, that it may help us in our particular calling, and the various occasions we have. Those are accepted of God, who prefer spiritual blessings to earthly good. It was a prevailing prayer, and prevailed for more than he asked. God gave him wisdom, such as no other prince was ever blessed with; and also gave him riches and honour. If we make sure of wisdom and grace, these will bring outward prosperity with them, or sweeten the want of it. The way to get spiritual blessings, is to wrestle with God in prayer for them. The way to get earthly blessings, is to refer ourselves to God concerning them. Solomon has wisdom given him, because he did ask it, and wealth, because he did not.