Or lu {loo}; or luw {loo}; a conditional particle; if; by implication (interj. As a wish) would that! -- if (haply), peradventure, I pray thee, though, I would, would God (that).
H3863. lu
לֻא 2 Samuel 18:12 Kt (Qr לוּ) if: see לוּ.
לאב (√ of following, compare Arabic (medial ) be thirsty, a stony tract of land (see WetzstReisebericht 99)).
לוּ17 and לוּא ( 1 Samuel 14:30; Isaiah 48:18; 63:19), also לֻא (Qr לוּ), 2 Samuel 18:12; 19:7 (Arabic , Aramaic , לְוַי, Mishna לְוַי, Assyrian lû, with optative force, Dl§§ 78 end, 93, 145; compare Köii. 333),
conjunction if, O that: —
1 if (stating a case which has not been, or is not likely to be, realized):
a. followed by perfect (so mostly), Deuteronomy 32:29 זאת ישׂכילו חכמו לו if they had been wise (which they are not), they would understand this; Micah 2:11 (apodosis וְהָיָה); Judges 8:19; 13:23 י ׳חפץ לו לקח לא להמיתנו if J. had desired to slay us, he would not have taken, &c.; 1 Samuel 14:30; 2 Samuel 19:7.
b. followed by imperfect Ezekiel 14:15 if I were to send, &c. (but read probably אוֺ, compare 14:17; 14:19).
c. followed by participle, 2 Samuel 18:12 שֹׁקֵל אָנֹכִי וְלֻא and though I should be weighing 1000 pieces of silver upon my hand, I would not, &c.; Psalm 81:14-17 לי שֹׁמֵעַ עמי לו if my people were hearkening to me, . . . quickly would I bow down, &c.
d. followed by יֵשׁ Job 16:4. — With the apodosis omitted, Genesis 50:15 יִשְׂטְמֵנוּ לוּ if Joseph were to hate us (how should we fare then ?).
2 If only ...! i.e. O that! would that! (compare εἰ γάρ, εἴθε) usually followed by perf., as Numbers 14:2 (twice in verse) מַתְנוּ לוּ if only we had died in the land of Egypt! 20:3; Joshua 7:7 וַנֵּשֶׁב הוֺאַלְנוּ וְלוּ Isaiah 48:18; 63:19; followed by יֵשׁ Numbers 22:29; followed by imperfect Genesis 17:18 יחיה לו O that Ishmael might live before thee! Job 6:2; followed by jussive Genesis 30:34 יהי לו כדברך; followed by imperative 23:13 שׁמעני לוּ אתה אם if thou — O that thou wouldst hear me! (+ probably 23:5 שׁמעני לוּ ׃ לאמר for שׁ ׃ לוֺ ׳לאמרֹ, and similarly 23:15). — Read also probably לֻא for Masoretic לֹא Judges 21:22 (with עַתָּה כִּי), 1 Samuel 13:13; 20:14 (twice in verse); Job 9:33 (followed by יֵשׁ); and perhaps 14:4 (Ew Kö).