What did the Council of Chalcedon emphasize about Jesus?

The Council of Chalcedon, convened in 451 AD, was a pivotal ecumenical council in the history of Christian doctrine. One of its primary objectives was to clarify the nature of Christ in response to various theological disputes of the time. The key affirmation made by the council was that Jesus Christ is recognized as having two natures: one fully divine and one fully human, united in one person without confusion, change, division, or separation. This doctrine is known as the Hypostatic Union.

This emphasis on the dual nature of Christ was crucial in countering heresies that either diminished His humanity or divinity, leading to a more comprehensive understanding of who Jesus is in the Christian faith. Recognizing both natures was essential for addressing the salvific work of Christ, affirming that He must be truly God to save us and truly human to represent humanity.

In contrast, other choices either reflected incomplete aspects of Christ's identity or focused solely on His role or teachings, which did not encompass the comprehensive Christological doctrine established at Chalcedon. Thus, the strong emphasis on “His two natures, one person” accurately captures the theological significance articulated by the council.