Exodus 32:28-30

New International Version

²⁸ The Levites did as Moses commanded, and that day about three thousand of the people died. ²⁹ Then Moses said, “You have been set apart to the Lord today, for you were against your own sons and brothers, and he has blessed you this day.”

³⁰ The next day Moses said to the people, “You have committed a great sin.^(A) But now I will go up to the Lord; perhaps I can make atonement^(B) for your sin.”