World Religions & Comparative Theology

“So Paul, standing in the midst of the Areopagus, said: ‘Men of Athens, I perceive that in every way you are very religious. For as I passed along and observed the objects of your worship, I found also an altar with this inscription: “To the unknown god.” What therefore you worship as unknown, this I proclaim to you.’” — Acts 17:22-23

Christianity did not emerge in a vacuum. From its earliest days, the church proclaimed the gospel in a world filled with competing religious claims — Jewish monotheism, Greek philosophy, Roman paganism, and eventually Islam. The apostle Paul modeled the Christian posture: attentive to what others believe, respectful of genuine religious longing, yet unflinching in the proclamation that the unknown God has made himself known in Jesus Christ.

Comparative theology is not an exercise in relativism. It is an exercise in clarity. By understanding what other faiths affirm and deny, Christians gain a sharper view of what makes the gospel distinctive — and why it matters. The goal is not to find a lowest common denominator among religions, but to understand each tradition on its own terms and then to make a compelling case for the truth of Christ.

The Christian Call to Engage

Scripture calls believers to engage the world with both truth and love:

• Truth: “We destroy arguments and every lofty opinion raised against the knowledge of God, and take every thought captive to obey Christ” (2 Corinthians 10:5)
• Love: “Walk in wisdom toward outsiders, making the best use of the time. Let your speech always be gracious, seasoned with salt” (Colossians 4:5-6)
• Humility: “With gentleness and respect, having a good conscience” (1 Peter 3:15-16)

The Greek word apologia (ἀπολογία) — “defense, reasoned account” — used in 1 Peter 3:15, describes the posture of one who gives an answer, not one who attacks. Christians engage other faiths not out of arrogance but out of love for the truth and love for the people who need it.

In This Section

• Christianity & Judaism — Shared heritage, Messianic hope, and the great divergence over the identity of Jesus
• Christianity & Islam — Common ground and critical differences on the person of Christ, salvation, and the nature of God
• The Uniqueness of Christ — Why Jesus’ exclusive claims matter and how Christians respond to religious pluralism