Bereshis 22:11

11 And the Malach Hashem called unto him out of Shomayim, and said, Avraham, Avraham: and he said, Hineini.

Bereshis 22:11 Meaning and Commentary

Genesis 22:11

And the Angel of the Lord called unto him out of heaven
Not a created angel, but the eternal one, the Son of God, who perhaps appeared in an human form, and spoke with an articulate voice, as be frequently did; for that this was a divine Person is clear from his swearing by himself, and renewing the promise unto Abraham, ( Genesis 22:16-18 ) :

and said, Abraham, Abraham;
the repeating his name denotes haste to prevent the slaughter of his son, which was just upon the point of doing, and in which Abraham was not dilatory, but ready to make quick dispatch; and therefore with the greater eagerness and vehemency the angel calls him by name, and doubles it, to raise a quick and immediate attention to him, which it did:

and he said, here [am] I:
ready to hearken to what shall be said, and to obey what should be ordered, (See Gill on Genesis 22:1).

Bereshis 22:11 In-Context

9 And they came to the place which G-d had told him of; and Avraham built a mizbe’ach there, and laid the wood in order, and made the akedah (binding) of Yitzchak his son, and laid him on the mizbe’ach upon the wood.

10 And Avraham stretched forth his hand, and took the knife to slay his son.

11 And the Malach Hashem called unto him out of Shomayim, and said, Avraham, Avraham: and he said, Hineini.

12 And he said, Lay not thine hand upon the young man, neither do thou any thing unto him: for now I know that thou fearest G-d, seeing thou hast not withheld thy son, thine ben yachid from Me.

13 And Avraham lifted up his eyes, and looked, and hinei behind him a ram caught in a thicket by his horns: and Avraham went and took the ram, and offered him up for a burnt offering TAKHAT (instead of ) his son. [YESHAYAH 53:8]