Although Solomon's choice was made "in a dream" 1-Kings 3:5, we must regard it as springing from his will in some degree, and therefore as indicative of his moral character.

And the speech pleased the Lord, that Solomon had asked this thing. Understanding in the affairs of civil government; since he had respect not to his own private benefit and advantage, but the good of the people he governed, and the honour and glory of God, who had set him over them, they being his chosen people, and whose vicegerent he was.

the speech pleased the Lord--It was Solomon's waking prayers that God heard and requited, but the acceptance was signified in this vision.