Exodus 32:30 in the World English Bible
On the next day, Moses said to the people, “You have sinned a great sin. Now I will go up to the LORD. Perhaps I shall make atonement for your sin.”
Context
29 For Moses had said, Consecrate yourselves to day to the LORD, even every man upon his son, and upon his brother; that he may bestow upon you a blessing this day.
30 And it came to pass on the morrow, that Moses said unto the people, Ye have sinned a great sin: and now I will go up unto the LORD; peradventure I shall make an atonement for your sin.
31 And Moses returned unto the LORD, and said, Oh, this people have sinned a great sin, and have made them gods of gold.