ΕἸ: εἰ, conjunctive particle, used in conditions and in indirect questions. I. . Conditional, if; 1. . c. indic., expressing a general assumption; (a) . pres.: seq. indic, pres., Mt 11:14, Ro 8:25, al.; seq. imperat., Mk 4:23 9:22, Jo 15:18, I Co 7:9, al.; seq. fut. indic., Lk 16:31, Ro 8:11, al.; seq. pf. or aor., with negation in apodosis, Mt 12:26, Ro 4:14, al.; similarly, seq. impf., Lk 17:6, Jo 8:39; seq. quæst., Mt 6:23, Jo 5:47 7:23 8:46, I Pe 2:20; (b) . fut.: Mt 26:33, I Pe 2:20; (c) . pf.: Jo 11:12, Ro 6:5, al.; (d) . aor.: Lk 16:11 19:8, Jo 13:32, 18:23, Re 20:15, al.
2. . Where the assumption is certain = ἐπεί: Mt 12:28, Jo 7:4, Ro 5:17, al.
3. . Of an unfulfilled condition, c. indic, impf., aor. or plpf., seq. ἄν, c. imp. or aor. (v.s. ἄν, I, i).
4. . C. indic., after verbs denoting wonder, etc., sometimes, but not always, coupled with an element of doubt: Mk 15:44, I Jo 3:13, al.
5. . C. indic., as in LXX (Nu 14:3o, I Ki 14:45, al. = Heb. אִם), in oaths, with the formula of imprecation understood in a suppressed apodosis (WM, 627; Burton, §272): Mk 8:12, He 3:11 (LXX) 4:3 (LXX).
6. . Rarely (cl.) c. optat., to express a merely possible condition: Ac 24:19 27:39, I Co 14:10 15:37, I Pe3:14, 17.
II. . Interrogative, if, whether. 1. . As in cl., in indir. questions after verbs of seeing, asking, knowing, saying, etc.: c. indic. pres., Mt 26:63, Mk 15:36, Ac 19:2, II Co 13:5, al.; fut., Mk 3:2, Ac 8:22, al.; aor., Mk 15:44, I Co 1:16, al.; c. subjc. aor. (M, Pr., 194), Phl 3:12.
2. . As in LXX (= Heb. אִם and interrog. הֲ, Ge 17:17, al.; v. WM, 639 f.; Viteau, i, 22), in direct questions: Mk 8:23 (Tr., WH, txt.), Lk 13:23, 22:49, Ac 19:2, al.
III. . With other particles. 1. . εἰ ἄρα, εἴγε, εἰ δὲ μήγε, v.s. ἄρα, γε.
2. . εἰ δὲ καί, but if also: Lk 11:18; but even if, I Co 4:7, II Co 4:3 11:16.
3. . εἰ δὲ μή, but if not, but if otherwise: Mk 2:21, 22, Jo 14:2, Re 2:5, al.
4. . εἰ καί, if even, if also, although: Mk 14:29, Lk 11:8, I Co 7:21, II Co 4:16, Phl 2:17, al.
5. . καὶ εἰ, even if, v.s. καί 6. . εἰ μή, if not, unless, except, but only: Mt 24:22, Mk 2:26 6:5, Jo 9:33, I Co 7:17 (only), Ga 1:19 (cf. ἐὰν μή, 2:16; v. Hort., Ja., xvi); ἐκτὸς εἰ μή, pleonastic (Bl., §65, 6), I Co 14:5 15:2, I Ti 5:19.
7. . εἰ μήν = cl. ἦ μήν (M, Pr., 46), in oaths, surely (Ez 33:27, al.): He 6:14.
8. . εἴ πως, if haply: Ac 27:12, Ro 1:10.
9. . εἴτε . . . εἴτε, whether . . . or: Ro 12:6-8, I Co 3:22 13:8, al.