From an unused root meaning to despatch as a deputy; a messenger; specifically, of God, i.e. An angel (also a prophet, priest or teacher) -- ambassador, angel, king, messenger.
H4397. malak
מַלְאָךְ214 noun masculine messenger; — ׳מ Exodus 23:20 48t.; construct מַלְאַךְ Genesis 16:7 69t.; suffixes מַלְאָכִי Exodus 23:23 3t.; מַלְאָכוֺ Genesis 24:7, 40; plural מַלְאָכִים 32:4 63t. + מלאכים 2 Samuel 11:1 Kt ( Qr מלכים); construct מַלְאֲכֵי Genesis 28:12 11t.; מַלְאָכֶיךָ Numbers 24:12; 2 Kings 19:23; מַלְאָכֵכֵה Nahum 2:14 error for מַלְאָכֵכִי = מַלְאָכַיְכִי Ges§ 91, (2) Anm. 2 or < for מַלְאָכֵךְ by dittograph from following הוֺי Köii. 1. 571). מַלְאָכָיו2 Chronicles 36:15 8t.; —
1 messenger,
a. one sent with a message Genesis 32:4 8t. J E; Deuteronomy 2:26, (not in P); Judges 6:35 8t.; 1 Samuel 6:21 51t. Samuel Kings, 1 Chronicles 14:1; 19:2, 16; 2 Chronicles 18:12; 35:21; Nehemiah 6:3; Job 1:14; Proverbs 13:17; 17:11; Isaiah 14:32; 18:2; 30:4; 37:9, 14; Jeremiah 27:3; Ezekiel 17:15; 23:16, 40; 30:9; Nahum 2:14; שׁלום מלאכי, messengers of peace Isaiah 33:7.
b. a prophet Isaiah 42:19; 44:26; 2 Chronicles 36:15-16, Haggai 1:13; the herald of the advent מלאכי Malachi 3:1.
c. priest Malachi 2:7, probably Ecclesiastes 5:5 (RV angel).
d. "" מֵלִיץ Job 33:23, a messenger from God acting as an interpreter and declaring what is right (angel of RV too specific).
e. figurative ׳מ רָעִים messengers of evil Psalm 78:49; ׳מ מות messenger of death Proverbs 16:14; "" רוחות winds his messengers Psalm 104:4.
2 angel, as messenger of God, מלאכים with God in theophanies Genesis 19:1, 15; 28:12; 32:2 (JE), praising him; Psalm 103:20; 148:2; in his sight not without error Job 4:18 charged with the care of the pious Psalm 91:11; elsewhere singular sent to a prophet 1 Kings 13:18; 19:5, 7; 2 Kings 1:3, 15; Zechariah 1:9 18t. in Zechariah 1-6; excellent, wise, powerful 1 Samuel 29:9; 2 Samuel 14:17, 20; 19:28; Zechariah 12:8; encamping about the faithful Psalm 34:8; chasing his enemies 35:5; 35:6; destroying by judgment of Yahweh 2 Samuel 24:16-17, = 1 Chronicles 21:12-30; 2 Kings 19:35 = Isaiah 37:36 2 Chronicles 32:21.
3 the theophanic angel ׳מ ה֯א֠להים in the story of E: Genesis 21:17; 31:11; Exodus 14:19, also in Judges 6:20; 13:6, 9; ׳מ יהוה in the story of J: Genesis 16:7, 9, 10, 11; 22:11, 15; Exodus 3:2; Numbers 22:22-23, 24, 25, 26, 27, 31, 32, 34, 35 and in Judges 2:1; 2:4; 5:23; 6:11; 6:12; 6:21 (twice in verse); 6:22 (twice in verse); 13:3, 13, 15, 16 (twice in verse); 13:17-18, 20 (twice in verse); 13:21; הַמַּלְאָךְ Genesis 48:16 (E); מַלְאָךְ Exodus 23:20 (E), 33:2; Numbers 20:16 (JE), Hosea 12:5; מַלְאָכִי Exodus 23:23 (E), 32:34 (J); מַלְאָכוֺ Genesis 24:7, 40 (J), ׳מ פניו Malachi 3:1 (referring to the ancient מלאך); ׳מ הכרית 3:1 (referring to the advent of ׳י for judgment, see BrMP 473). The theophanic angel is not mentioned in D and P.
לאך (√ of following; Biblical Hebrew מַלְאָח לאך,).