pious, the father of Agur (Prov. 30:1). Nothing is known of him.
On consideration, Agur, the son of jakeh, didn't know all about it.
Be they Solomon's words, or the words of Agur, the son of jakeh, they are canonical.
Agur the son of jakeh says: For three things the earth is disquieted, and for four which it cannot bear.