1 Kings 3:6-8

According as he walked before thee in truth In the true worship of God, in the profession, belief, practice, and defence of the true religion. So truth here contains all duties to God, as righteousness doth his duties to men, and uprightness the right manner of performing both sorts of duties. In uprightness of heart with thee That is, in thy judgment, to whom he appealed as the witness of his integrity. I am but a child So he was in years: not above twenty years old, and withal (which he principally intends) he was raw and inexperienced as a child in state affairs. How to go out, &c. To govern my people, and manage affairs. Thy servant is in the midst of thy people 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. Which thou hast chosen Thy peculiar people, whom thou takest special care of, and therefore wilt expect a more punctual account of my government of them.