The Man......

Yisrael said to Yosef:
Are not your brothers tending sheep in Shekhem?
Come, I will send you to them!
He said to him:
Here I am.

הנני HERE AM I — An expression denoting humility and readiness: he was zealous to perform his father’s bidding, although he was aware that his brothers hated him (Genesis Rabbah 84:13).

And his brothers went to pasture sheep (Gen. 37:12) - there are dots on the [direct object marker] ET. This teaches you that they did not go to pasture sheep, rather, it is to pasture themselves. "And Israel said to Yosef: 'aren't your brothers pasturing in Shechem?'" (Gen. 37:13) Rabbi Tanchuma in the name of Rabbi Berachia: he behaved towards [his father] with the appropriate respect: "And he answered him: 'here I am'. Rabbi Chama bar Chanina: Yaakov remembered these words and his internal organs would feel like they were being chopped up: you knew that your brothers hated you, and still you said to me 'here I am.' ""And he said to him, “Go and see how your brothers are and how the flocks are faring" (Gen. 37:14) - it would have been sufficient 'how your brothers are faring', what does 'and the sheep' add? One explanation is that a person should always ask one's fellow about the things that bring sustenance. "And bring me back word.' So he sent him from the valley of Hebron." (Gen. 37:14) Isn't Hebron in the valley? R. Acha said, " He went to fulfill that deep counsel that the Holy One of Blessing gave between Himself and the fine colleague who is buried in Hebron [Abraham] : ' and they shall be enslaved and oppressed' (Genesis 15:13).

And he said to him, “Go and see how your brothers are and how the flocks are faring, and bring me back word.” So he sent him from the valley of Hebron. When he reached Shechem,

ויבא שכמה AND HE CAME TO SHECHEM — A spot foredestined to be the scene of misfortunes: there the sons of Jacob sinned (by selling Joseph), there Dinah was maltreated, there the kingdom of the House of David was divided, as it said (1 Kings 12:1) “And Rehoboam went to Shechem etc.” (Sanhedrin 102a).

And the Rabbis say that the source is from here, the verse that describes when Jacob sent Joseph to his brothers: “And he said to him: Go now, see whether it is well with you brothers and well with the flock; and bring me back word. So he sent him out of the valley of Hebron, and he came to Shechem” (Genesis 37:14). The verse indicates that Jacob sent Joseph at a time when he could see his brothers, i.e., during the day. This shows that a Torah scholar should not go out alone at night.

AND HE SENT HIM OUT OF THE VALLEY OF HEBRON. Scripture mentions the place from which Joseph was sent, in order to indicate that there was a great distance between father and son, and that this was the reason why the brothers did him evil: they were distant far from their father. It also serves to relate that Joseph, out of respect for his father, strengthened himself to go after them to a distant place, and he did not say, “How shall I go when they hate me?”. Our Rabbis yet have a Midrash concerning this matter, in which they say, “It was to fulfill the profound thought of the ‘seemly companion’ who was buried in Hebron.”

So when God made me wander from my father’s house, I said to her, ‘Let this be the kindness that you shall do me: whatever place we come to, say there of me: He is my brother.’”

"A man found him, and behold! He was blundering in the field: Rabbi Yannai said: He [Joseph] was met by three angels for scripture says, "A man found him" (Gen. 34:15); "and the man asked him"; and "the man said" (Gen. 34:17). "They have gone from here" - from the characteristics of the Place. "And they saw him far off"(Gen. 34:18): They said, 'Let us kill him by inciting the dogs against him.' "And they said one to another behold the dreamer comes"(Gen. 34:19): the rabbis said, “they exclaimed, Behold he is coming wrapped in his dreams”. Rabbi Levi said, “[they said] this one will ensnare us into serving foreign overloads.” "Come now therefore and let us slay him"(Gen. 34:20): The Holy One of Blessing said to them, “You say ‘We shall see’ and I say ‘We shall see’. Indeed "we shall see whose words will be fulfilled." (Jer. 34:28)

וימצאהו איש AND A MAN FOUND HIM — This was the angel Gabriel (Genesis Rabbah 84:14) as it is said, (Daniel 9:21) and the man (והאיש) Gabriel” (Midrash Tanchuma, Vayera 22).

AND A CERTAIN MAN FOUND HIM. According to the plain meaning of the text a passer by found him.

"straying": "straying" in all instances connotes outside of the boundary. Though there is no proof for this, there is support for it in (Genesis 37:15) "and, behold, he was straying in the field."