Sforno on Genesis 2:9/ספורנו על בראשית ב׳:ט׳

1ויצמח, G‘d made the food necessary for Adam sprout forth. The verse illustrates with what ease Adam could secure his requirements in Gan Eden.

2נחמד למראה, looking at these trees resulted In the viewer experiencing intellectual stimulation both of his heart and his brain. He would thus be capable of “digesting” the additional intellectual insights granted him by G’d. Compare Kings II 3,15 ותהי עליו יד ה', “Elisha had now been endowed by G’d’s generosity.” [a reference to the additional spiritual insights he had asked from his mentor Elijah prior to the latter ascending to heaven. Ed.]

3ועץ הדעת, a tree whose fruit results in those who eat from it gaining greater understanding of the relationship of good and evil. The word דעת, which appears here for the first time, helps us understand Genesis 4,1 והאדם ידע את חוה אשתו. Without this verse we would have been puzzled by the Torah telling us something that was so obvious. Who does not “know” his wife, especially when he had described her as “bone of my bone and flesh of my flesh!” (2,23) In our verse we are told that the words ידע, דעת do not primarily refer to factual knowledge but to conceptual knowledge. This also helps us to understand why relatives, as in Ruth 2,1 are referred to as מודע לאישה, “someone whom her late husband had been intimate with, had been related to by blood.” It is normal for blood relations to be concerned with the physical and emotional needs of their kin. (compare Proverbs 17,17.)

4טוב ורע, to choose that which appeared as appealing to the senses even though it would prove harmful, and to despise anything which did not appeal to his senses although he knew it to be useful to him.