Do Jews and Christians believe in the same God?

For most Christians, the answer begins with a firm yes, and not merely as an abstract theological position. The God Christians worship is explicitly identified, throughout the New Testament, as the God of Abraham, Isaac and Jacob. Jesus himself was Jewish, shaped by the Hebrew scriptures, the psalms, the law and the prophets. When he prays, he addresses the God of Israel. When Paul writes to early Christian communities, he draws constantly on the Hebrew Bible to make his arguments. The God who called Israel, who led the people out of Egypt, who spoke through the prophets, is understood in Christianity not as a different deity but as the same one who is revealed more fully, in the Christian telling, through Jesus. This sense of deep continuity is not incidental. It is structural to the whole Christian story.

And yet Christianity introduces a claim that most Jews find not just different but incompatible: the doctrine of the Trinity. Christians confess that God is one, but that this one God is Father, Son and Holy Spirit. Jesus is understood not merely as a great teacher or prophet but as the second person of the Trinity, fully divine. This is where the shared ground becomes genuinely complicated. Jewish theology holds firmly to the oneness and undivided unity of God, a conviction so central that it shapes Jewish prayer, life and identity. From a Jewish perspective, the Christian understanding of God introduces a kind of complexity, or even plurality, into the divine that feels like a departure from monotheism. Christians would say they are not worshipping three gods, but one God in three persons. The distinction matters enormously to them, though it does not resolve the tension from a Jewish standpoint.

Thoughtful Christians across history have handled this tension in different ways. Some, drawing on figures like Justin Martyr in the early church or later theologians such as Thomas Aquinas, argued that God's self-revelation builds and deepens across time, and that what Israel knew of God was genuinely real and true, even if incomplete in the Christian view. Others have emphasised that the very scriptures Christians rely on are Jewish scriptures, and that Christianity cannot make sense of itself without them. More recently, documents from the Catholic Church and statements from various Protestant traditions have moved strongly away from older "replacement" theologies, which held that the church had simply superseded Israel in God's purposes. There is now broad recognition, across many Christian denominations, that God's covenant with the Jewish people has not been revoked.

If you are wrestling with this question personally, perhaps because you have a Jewish friend, a mixed-faith family, or simply a deep curiosity about where these two traditions truly meet, it helps to hold two things at once. There is genuine shared ground: the same scriptural inheritance, the same ethical vision of a God who demands justice and loves mercy, the same conviction that this God is not a distant force but one who enters into relationship with human beings. And there is genuine difference: the Christian claim about Jesus changes how God is understood in ways that are not minor adjustments. The question is not who is right, but whether you can see both the real connection and the real distinction clearly, without flattening either.

What many Christians would say, in honest reflection, is that Jews and Christians are not worshipping entirely different realities, as if one side had invented a god out of nothing. But they are also not simply worshipping the same God in slightly different cultural styles. The difference is more serious than that. The Christian understanding of God has been permanently shaped by the belief that Jesus is Lord, and that shapes everything, including what it means to say "God" at all. Jews, with equal seriousness and depth, understand God in a way that cannot accommodate that claim. That disagreement deserves to be respected rather than papered over, and it can be held with warmth and genuine curiosity on both sides.