• Noun: an undivided or unbroken completeness or totality with nothing wanting; examples: "the integrity of the nervous system is required for normal development", "he took measures to insure the territorial unity of Croatia"
• Noun: the smallest whole number or a numeral representing this number; examples: "he has the one but will need a two and three to go with it", "they had lunch at one"
• Noun: the quality of being united into one
Unity can only be manifested by the Binary. Unity itself and the idea of Unity are already two.
The Passion narratives are the first pieces of the Gospels that were composed as a unity.