1)
Who is "Naloz"?
1.
Rashi: It is one who makes his ways crooked.
2.
Malbim: He departs from straightness; his Binah goes crooked, to heresy and denial.
2)
Who are "Yesharim"?
1.
Malbim: Their hearts are straight, and they go straightly in their Binah. They are Ohavei Hashem.
3)
What is the meaning of "v'Es Yesharim"?
1.
Rashi: It is with Yesharim.
4)
What Sod is discussed?
1.
Malbim: Hashem reveals to them His secrets, of Ma'ase Bereishis and [Ma'ase] Merkavah.