NET
30 The next day Moses said to the people, “You have committed a very serious sin, but now I will go up to the Lord—perhaps I can make atonement on behalf of your sin.”
Darby
30 And it came to pass the next day, that Moses said to the people, Ye have sinned a great sin. And now I will go up to Jehovah: perhaps I shall make atonement for your sin.
KJV
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.