30 And it cometh to pass, on the morrow, that Moses saith unto the people, `Ye -- ye have sinned a great sin, and now I go up unto Jehovah, if so be I atone for your sin.'
30
The next day Moses said to the people, “You have committed a great sin. But now I will go up to the LORD; perhaps I can make atonement for your sin.”
Young's Literal Translation is in the public domain.