Dictionary entry

Ἰσαάκ

G. Abbott-Smith's A Manual Greek Lexicon of the New Testament

Ἰσαάκ

(in MSS. sometimes -σάκ; cf. Deiss., BS, 189; Thack., Gr., 100), ὁ, indecl. (in FlJ, Ἴσακος, -ου), (Heb. יִצְחָק),

Isaac (Ge 17:19, al.): Mt 1:2, Ro 9:10, al.