Final answer:
The Eutychianistic view that Jesus's humanity is like a 'drop of vinegar in the ocean of divinity' suggests he cannot be fully human, as his human nature is seen as overwhelmed by his divine nature. This view conflicts with the Chalcedonian definition of Christ as both fully human and fully divine.
Step-by-step explanation:
The statement "The humanity of Jesus in Eutychianism becomes a 'drop of vinegar in the ocean of divinity'" refers to the belief held by Eutychianism that Jesus Christ's human nature is overwhelmed by his divine nature. Eutychianism implies that Jesus's humanity is almost absorbed or lost in his divinity, likening it to a drop of vinegar lost in the vastness of the ocean. Consequently, this perspective would assert that Christ cannot be fully human because his human nature is not distinct from his divine nature. This stands in contrast to the position held by the Council of Chalcedon, which articulated that Jesus was to be acknowledged in two natures, without confusion, change, division, or separation, effectively affirming both the complete divinity and complete humanity of Christ.
In the context of Eutychianism, Jesus' ability to comprehend human suffering and experiences could be questioned, as his human aspect is diminished. However, Eutychianism does not deny Christ's divinity, nor does it directly address his role as a mediator or his comprehensibility to humans. The heresy of Eutychianism was indeed part of the broader historical and theological discussions on Christology within the early Christian church, illustrating a pivotal period of defining Christ's dual nature as both human and divine.