Meaning
(1) Likeness: (a) between nouns (Gen 3:5, Jdg 6:5, Phi 2:8, Heb 11:27, Heb 11:29); (b) between verbs (Luk 6:36, Joh 5:30, 1Co 10:7); (c) between adjectives (1Co 15:48).
(2) Limitation (with respect to a particular aspect or relation) (1Pe 4:15, 1Pe 4:16).
(3) Time (Luk 8:5, Luk 15:25, Act 8:36).
(4) Cause (1Co 4:1).
(5) Concession (Joh 7:10, 2Co 11:21).
(6) Illustration, in numerous passages, beginning "as it is written," "as it is said," etc.