What did his father teach to him?
Rashi: The same rebuke that I give to you.
R. Yonah: This Torah and these Musarim.
Malbim: He shows to me the path in practice, and the ways of Chachmah. I saw this via his actions and conduct - serving [Chachamim in] Torah is greater than learning it (Brachos 7b).
Why does it say "va'Yomer Li"?
Malbim: This he said explicitly. ("Va'Yoreni" applies to what I learned from his actions.)
What is the meaning of "Yismach Devarai Libecha"?
R. Yonah: Think about them constantly and do not forget them.
Malbim: The heart is the power of authority in the Nefesh. It moves; it does not stay in one state for a moment. Desire and the Yetzer constantly entice it to veer from the laws of Chachmah. Therefore, my words should support your heart to stand on Chachmah and not move from it.
Why does it say "Shmor Mitzvosai ve'Chye"?
Malbim: Guard my Mitzvos due to Hashem's command, even if there is no reason, and via this you will live.
