What's the Book of Jonah All About?
How Can a Christian Bear the "Fruit of the Spirit" (Galatians 5:22)?
How is John the Baptist the Least in the Kingdom (Luke 7:24-30)?
Psalms 133:1 for (yachadh, "unitedness," and Ephesians 4:3,13 for henotes "oneness." Also Sirach 25:1 the King James Version for homonoia "concord" (so the Revised Version (British and American)).
Orr, James, M.A., D.D. General Editor. "Entry for 'UNITY'". "International Standard Bible Encyclopedia". 1915.