G3996
πενθέω
to mourn
πενθέω, -ῶ [in LXX chiefly for אָבַל ;] to mourn (for), lament; __(a) intrans. : Mat.5:4 (5) Mat.9:15, 1Co.5:2; π. καὶ κλαίειν, Mat.16:10, Luk.6:25, Jas.4:9, Rev.18:15, 19; before ἐπί, with accusative, Rev.18:11; __(b) trans., with accusative, 2Co.12:21.† SYN.: see: θρηνέω (AS)
The KJV translates G3996 in the following manner:
mourn (10x), mourned (4x), wailing (4x), bewail (2x), have (2x)
Full Thayer's lexicon entry
πενθέω — penthéō
πενθέω, πένθω; future πενθήσω; 1 aorist ἐπένθησα (πένθος); from Homer down; the Sept. chiefly for אָבַל; to mourn;
a. intransitive: Mat 5:4;; 1Co 5:2; πενθεῖν καί κλαίειν, Mar 16:10; Luk 6:25; Jas 4:9; Rev 18:15; Rev 18:19; ἐπί τίνι, over one, Rev 18:11 R G L (Isa 66:10); ἐπί τινα, ibid. T Tr WH (2Sa 13:37; 2Ch 35:24, etc.).
b. transitive, to mourn for, lament, one: 2Co 12:21 (cf. Winers Grammar, 635f (590); Buttmann, § 131, 4. Synonym: see θρηνέω, at the end.)
10 occurrences
Matthew (2), Mark (1), Luke (1), I Corinthians (1), II Corinthians (1), James (1), Revelation of John (3)