Genesis 16:7

“And the angel of the Lord found her, etc.] This is the first time that mention is made of an angel in Scripture, but is not to be understood of a created angel, but of a divine Person, as appears from (<011610>Genesis 16:10,13), the uncreated angel, the Logos or Son of God, called the Angel of God’s presence, and the Angel of the covenant, (<236309>Isaiah 63:9) (<390301>Malachi 3:1); who often appeared in an human form before his incarnation, being sent by his divine Father on one account or another; and hence called an angel, a messenger, or one sent, as in the fulness of time he was sent in human nature to be the Redeemer of his people; though many of the Jewish writers take this angel to…”

“And the angel of the Lord found her by a fountain--This well, pointed out by tradition, lay on the side of the caravan road, in the midst of Shur, a sandy desert on the west of Arabia-PetrÃ&brvbra, to the extent of a hundred fifty miles, between Palestine and Egypt. By taking that direction, she seems to have intended to return to her relatives in that country. Nothing but pride, passion, and sullen obstinacy, could have driven any solitary person to brave the dangers of such an inhospitable wild; and she would have died, had not the timely appearance and words of the angel recalled her to reflection and duty.”

“- The Birth of Ishmael 1. הנר hāgār, Hagar, “flight.” Hejrah, the flight of Muhammed. 7. מלאך mal'ak “messenger, angel.” A deputy commissioned to discharge a certain duty for the principal whom he represents. As the most usual task is that of bearing messages, commands, or tidings, he is commonly called a “messenger” ἄγγελος angelos). The word is therefore a term of office, and does not further distinguish the office-bearer than as an intelligent being. Hence, a מלאך mal'ak may be a man deputed by a man Genesis 32:3; Job 1:14, or by God Haggai 1:13; Malachi 3:1, or a superhuman being delegated in this case only by God. The English term “angel” is now especially appropriated to the latter…”

“16:7 The angel of the Lord was the Lord himself (16:13; 21:17; 22:11-12; 31:11-13; 48:16; Exod 3:2; 32:34; Judg 6:11, 16, 22; 13:22-23; Zech 3:1-2) but was also distinct from the Lord (Gen 24:7; 2 Sam 24:16; Zech 1:12). The angel of the Lord was probably a theophany (a manifestation of God) or a Christophany (an appearance of the pre-incarnate Messiah; see Gen 18:1-2; 19:1; Num 22:22; Judg 2:1-4; 5:23; Zech 12:8), speaking with the authority of the Lord himself.”