Between - Vine's Expository Dictionary of New Testament Words
Between* In addition to the prepositions en and pros (See Note +, p. 9), the following have this meaning:
[ 1,,G303 G3349,ana meson ] lit., up to the middle of," i.e., among, or in the midst of, hence, between, is used in 1 Corinthians 6:5, of those in the church able to decide between brother and brother, instead of their going to law with one another in the world's courts.
[ 2,,G3342, metaxu ]
"in the midst, or between" (from meta, and xun, i.e., sun, "with"), is used as a preposition,
(a) of mutual relation, Matthew 18:15; Acts 15:9; Romans 2:15, RV, "one with another," lit., "between one another," for AV, "the meanwhile;"
(b) of place, Matthew 23:35; Luke 11:51; Luke 16:26; Acts 12:6;
(c) of time, "meanwhile," John 4:31. In Acts 13:42, the AV marg. has "in the week between," the literal rendering. See WHILE.
Note: The phrase ek meta (ek, "out of," meta, "with") is translated "between ... and" in the AV of John 3:25 (RV, "on the part of ... with").