Translation:

31. "I tell you not that with me are the Treasures of Allah nor do I know what is hidden nor claim I to be an angel. Nor yet do I say of those whom your eyes do despise that Allah will not grant them (all) that is good: Allah knoweth best what is in their souls: I should if I did indeed be a wrongdoer."

Notes (Tafseer)

1522. The eighth point that Noah urges is that he is not a mere vulgar soothsayer pretending to reveal secrets not worth knowing, nor an angel living in another world, with no ties to them. He is their real well-wisher, delivering a true Message from Allah.

1523. Cf. vi. 50 and n. 867.

1524. But Noah will not close his argument without defending the men of Faith, whom the Chiefs despise because they are lacking in worldly goods. He tells them plainly that Allah perhaps sees in them something in which they, the arrogant Chiefs, are lacking. Their spiritual faculties can only be appreciated truly by Him to Whom all the secrets of the spirit are open. But he, Noah, must declare boldly his own Faith, and this is the ninth point in his argument.