Is the God of the Old Testament the Same as Jesus?

Plenty of people give up on the Bible somewhere around Exodus. The stories start out familiar enough, and then you hit a scene where a mountain catches fire, the ground shakes, and a crowd of people beg for the voice to stop. It does not sound like the God most of us heard about in the Christmas story. If you have ever quietly wondered whether the Bible is describing two different Gods — a frightening one in the front half and a kind one in the back — you are asking a fair question. It is one an entire New Testament letter was written to answer.

A mountain nobody was allowed to touch

The scene is Mount Sinai. God comes down to give His standards to a group of former slaves, and the description is not gentle: fire, darkness, wind, a sound like a trumpet, and a voice speaking words the people could not stand to hear.

The boundary was absolute. If a stray animal wandered onto the mountain, the animal had to be destroyed — not for anything it had done, but because of what the mountain represented.

And here is the detail most people miss. Moses — the man who had already watched a sea split open — said, “I am full of fear and trembling.” The leader was scared too.

What that mountain was actually showing

Pastor Jim made a point on Sunday worth sitting with: Moses did not say that while he was up on the mountain. He said it when he came back down and found the people already breaking the very first thing they had agreed to.

That is what terrified him. Not that God was in a bad mood, but that God is holy — completely, unmixedly good — and the people were not. A week earlier they had promised to be. They were not.

That is the point of the first mountain. It was never a picture of God’s temper. It was an honest picture of God’s standard — and of the gap between it and the people at the bottom looking up.

Most of us still live at the foot of that mountain in some form. We assume that if we string enough good weeks together and stay off the worst lists, we will eventually be square with God. The mountain answers that plan honestly: be the best person you can be today, and you are still not finished.

The second mountain

Hebrews 12 does not stop at Sinai. It puts a second mountain next to it, and the sentence turns: “you have come to Mount Zion and to the city of the living God.”

Sinai was a place you could not approach. Zion is described as a city — angels, a gathered crowd, people whose lives have been made right, and Jesus at the center of it. The first mountain had a warning posted at the boundary. The second one has an open gate.

So what changed? Not God. The letter is emphatic that His character is exactly the same, and it ends by calling Him a consuming fire. What changed is that someone finally met the standard.

Jesus — fully God and fully human, the only one of His kind — lived the life the first mountain required and did not fail it once. He did not come to cancel God’s standards but to satisfy them, and not only for Himself. He then stepped into the place of people who had failed and carried the penalty for it at the cross.

The proof it was accepted is not a feeling. On the third day God raised Him from the dead, bodily and publicly. That is the receipt.

Two mountains, one voice

Both mountains in Hebrews 12 have something to say. At Sinai, the sound was terrifying — a voice announcing a standard nobody in earshot could keep. At Zion, according to the letter, what speaks is Jesus’ own sacrifice, and what it says is forgiveness, peace, and three words He said out loud while He was dying: *it is finished.*

So there is one God, and He has not softened. What He has done is open a way to Himself that does not depend on you clearing that boundary under your own strength.

Which means the choice in front of anyone reading this is not really a hard one. On one side is a standard you already know you cannot reach. On the other is the person who reached it for you.

There is no entrance exam at the door here. If you want to hear the rest of it, there is a seat for you Sunday morning, and nobody is going to ask where you have been.

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**First Baptist Church Concord** meets every Sunday — Sunday School at 9:30 AM and worship at 10:45 AM.
We’re at 200 Branchview Dr SE, Concord, NC 28025, and we’d love to meet you.

→ Planning your first visit? [Here’s what to expect.](https://www.fbcconcord.org/planning-your-visit/)
→ Looking for community? [Here’s how to meet people.](https://www.fbcconcord.org/how-do-i-meet-people/)
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