What is one principal belief in Christianity regarding Jesus?

One principal belief in Christianity regarding Jesus is that he is both fully God and fully man. This doctrine, known as the Hypostatic Union, asserts that in the person of Jesus Christ, two natures—divine and human—are united in one individual. This belief is foundational to Christian theology and underscores the significance of Jesus' incarnation, which means that God became human to redeem humanity.

It is through this dual nature that Christians believe Jesus was able to fully experience human life, including suffering and temptation, while also possessing divine authority to forgive sins and offer salvation. This belief is articulated in key biblical passages, such as in the Gospel of John, which emphasizes Jesus’ divinity, alongside texts that illustrate his humanity, including his experiences and emotions.

The other options are less aligned with traditional Christian beliefs. The view of Jesus as solely a human teacher undermines the divine aspect of his nature, while the perspectives of providing economic success or being merely a historical figure do not encapsulate the essence of Jesus’ role in Christian faith as the Savior and the incarnate Word of God.