What Do We Learn about God's Justice in Romans Chapter 9?
How Could God Command Israel to Engage in Holy War to Exterminate the Canaanites?
When Isaiah Talks about "the Coming of the Nations" in Chapters 19 & 49, What Does that Mean?
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.