What is the difference between Yeshishim and Orech Yamim?
Devar Eliyahu: Yeshishim are old. Orech Yamim had good days without pain.
Malbim: Yeshishim know from many tests and experiences. There is no Safek about it, for it was acquired over many days from previous Zekenim, who had an inheritance from their fathers. Orech Yamim are those who investigated many days, and learn a matter from another matter via comparisons and logical reasoning. One may rely on this!
What Chochmah do Yeshishim have?
Rashi: They know that Chochmah is with Him (13).
Ma'alos ha'Torah DH Yafutzu: As long as wine is left in the bottle, it improves. So Divrei Torah - the longer they are in the body, they improve.
Malbim: Refer to 12:12:1:2.
What is the difference between Chochmah and Tevunah?
Devar Eliyahu: Chochmah is what one hears from others, or sees words of Chochmah. Tevunah is what one understands by himself. Only one who never had pain 1 can attain a heart that understands [Tevunah].
Malbim: Chochmah is known from many tests and experiences. Tevunah is learning a matter from another matter via comparisons and logical reasoning.
Ibn Ezra: The prefix Beis in bi'Yshishim applies also to Orech Yamim.
