Exodus 32:28-30

New Revised Standard Version, Anglicised Catholic Edition

²⁸ The sons of Levi did as Moses commanded, and about three thousand of the people fell on that day. ²⁹ Moses said, ‘Today you have ordained yourselves^[a] for the service of the Lord, each one at the cost of a son or a brother, and so have brought a blessing on yourselves this day.’

³⁰ On the next day Moses said to the people, ‘You have sinned a great sin. But now I will go up to the Lord; perhaps I can make atonement for your sin.’