is rendered "twain" in Matthew 5:41; 19:5,6; 21:31; 27:21,51; Mark 10:8 (twice); 15:38; in 1 Corinthians 6:16; Ephesians 5:31 , RV (AV, "two"); Ephesians 2:15; in Revelation 19:20 , RV (AV, "both").
Notes: (1) In the following phrases the numeral is used distributively: (a) ana duo, "two apiece," John 2:6 (in some mss., Luke 9:3 ); in Luke 10:1 , "two and two" ("by twos"); (b) kata duo, "by two," 1 Corinthians 14:27; (c) duo duo, "by two and two," lit., "two (and) two," Mark 6:7 (not a Hebraism; the form of expression is used in the papyri); (d) eis duo, "into two," in twain," Matthew 27:51; Mark 15:38 (see above). (2) In Luke 17:34 duo stands for "two men;" in Luke 17:35 for "two women."