Binitarianism

Binitarianism is a Christian theology of two persons, personas, or aspects in one substance/Divinity (or God). Classically, binitarianism is understood as a form of monotheism—that is, that God is absolutely one being—and yet with binitarianism there is a "twoness" in God, which means one God family. The other common forms of monotheism are "unitarianism", a belief in one God with one person, and "trinitarianism", a belief in one God with three persons.

Larry W. Hurtado of University of Edinburgh uses the word "binitarian" to describe the position of early Christian devotion to God, which ascribes to the Son (Jesus) an exaltedness that in Judaism would be reserved for God alone, while still affirming as in Judaism that God is one and is alone to be worshiped. He writes:

...there are a fairly consistent linkage and subordination of Jesus to God 'the Father' in these circles, evident even in the Christian texts from the latter decades of the 1st century that are commonly regarded as a very 'high' Christology, such as the Gospel of John and Revelation. This is why I referred to this Jesus-devotion as a 'binitarian' form of monotheism: there are two distinguishable figures (God and Jesus), but they are posited in a relation to each other that seems intended to avoid the ditheism of two gods.

Hurtado does not describe binitarianism as antithetical to Nicene Christianity but rather as an indication that Christians before the First Council of Nicaea were monotheistic (as evidenced by their singular reference to the Father as God), yet also devoted to Jesus as pre-existent, co-eternal, the creator, embodying the power of God, by whom the Father is revealed, and in whose name alone the Father is worshiped. He writes, “The central place given to Jesus ... and ... their concern to avoid ditheism by reverencing Jesus rather consistently with reference to 'the Father', combine to shape the proto-orthodox 'binitarian' pattern of devotion. Jesus truly is reverenced as divine.”

Hurtado's view might be interpreted as urging that, at this stage in the development of the Church's understanding, it could be said that God is a person (the Father) and one being; and that Jesus is distinct from the Father, was pre-existent with God, and also originating from God without becoming a being separate from him, so that he is God (the Son). This view of a binitarian pattern of devotion would posit a unity of God's being and a oneness of the object of worship, which is sympathetic to its predecessor view in Judaism; and it also displays a plurality of simultaneous identities, which is sympathetic to its successor in trinitarianism. It is a development in understanding of Christ, in other words, from which arose several subsequent ones in the further course of development that eventually came into conflict with one another.

Before Hurtado's influential work, one classic scholarly theory of binitarianism was that the Holy Spirit was seen as in some sense identical to the Son or uniquely embodied in him. The Shepherd of Hermas, among other sources, is cited to support the theory. Near the end of Parable Five, for example, an angel declares:

The preexistent Holy Spirit, which created the whole creation, God caused to live in the flesh that he wished. This flesh, therefore, in which the Holy Spirit lived served the Spirit well, living in holiness and purity, without defiling the Spirit in any way. ... [I]t had lived honorably and chastely, and had worked with the Spirit and cooperated with it in everything.

The classic theory of Christian binitarian theology (assumed by most dictionary definitions) asserts that some early Christians conceived of the Spirit as going out from God the creator, and is the creator: a person of God's being, which also lived in Jesus (or, from other sources, appears to be thought of as Jesus's pre-existent, divine nature). This view further asserts that the same Spirit is given to men, making them a new creation and sharers in the same hope of resurrection and exaltation. This interpretation of early Christian belief is often cited in contrast to trinitarianism. However, trinitarians cite the same sources as examples of pre-Nicene Christian monotheism, which is not orthodoxy but "proto-orthodox"—that is, one of several versions among Christians which explain monotheism as a plurality (Father, Son, Spirit) in one being, prior to orthodoxy's settlement in Christianity.