ἰδού,
[in LXX chiefly for הִנֵּה,]
prop. imperat. 2 aor. mid. of ὁράω, used as a demonstrative particle, with frequency much greater in LXX and NT than in cl. (see M, Pr., 11),
lo, behold, see: Mat.10:16 11:8 13:3, Mrk.3:32, Luk.2:48, 1Co.15:51, Jas.5:9, Ju 14, Rev.1:7, al.; after genitive absol., Mat.1:20 2:1, 13 12:46, al.; καὶ ἰδού, Mat.2:9 (and freq.), Luk.1:20 10:25, Act.12:7, al.; in elliptical sentences, taking the place of copula or predicate (like הִנֵּה in Heb.), Mat.3:17, Luk.5:12 22:31, 47 Act.8:27, 36 al.
(AS)