Communion (Christian)
The bond uniting Christians as individuals and groups with each other and with Jesus Christ, is described as communion.
Origin
The term is derived from Latin communio (sharing in common). The corresponding term in Greek is κοινωνία, which is often translated as "fellowship". In Christianity, the basic meaning of the term communion is an especially close relationship of Christians, as individuals or as a church, with God and with other Christians.
This basic meaning of the word predates its Christian uses. In Ancient Greek, κοινωνία could apply to a business partnership, to fellowship of life in marriage, to a spiritual relationship with divinity, to comradely fellowship between friends, to a community or society.
New Testament
The Greek term κοινωνία (koinonia) appears in the New Testament, but nowhere in the ancient Greek translation of the Old Testament known as the Septuagint. As a noun, or in its adjectival or verbal forms, it is found in 43 verses of the New Testament. In addition, the noun is found in some manuscripts (used for producing the English translation known as the King James Version, but not for more recent translations) in Ephesians 3:9.