I communed. An emphatic statement in the Hebrew, implying personal meditation, as opposed to talking things over with another person.
I am come. Literally, “I have caused to become,” in reference to the discipline of his faculties in work and study and to the resulting growth in knowledge and experience.
Gotten more wisdom. Or, “caught up wisdom.”
In Jerusalem. More exactly, “over Jerusalem,” that is, “over” the city as its rulers. This refers to wise men and rulers before Solomon’s day.
Had great experience. The Hebrew verb translated “had” is the same one given as “seen” in v. 14: literally, “saw [received a keen insight into] much,” that is, “of wisdom and knowledge.” The LXX renders “wisdom” by a word denoting ethical and moral values, and “knowledge” by one that means the speculative side of mental effort.