What did Moses say about being blotted out of the book of life to spare Israel?

Moses pleaded with God to spare Israel, asking that if it would help, his own name be blotted out of the book of life, but that Israel be spared. This mirrors Paul’s later willingness to be accursed from Christ for Israel’s sake.

Les explains that Paul had great heaviness and continual sorrow in his heart for Israel, even saying he could wish himself accursed from Christ. Les then asks who else said almost the same thing and answers Moses. Moses said, “Oh God, spare this people, and if it will help, blot my name out of the book of life, but spare Israel.” Moses was willing to be blotted out if it would help spare Israel.

Exodus 32:32

Yet now, if thou wilt forgive their sin--; and if not, blot me, I pray thee, out of thy book which thou hast written.

Romans 9:3

For I could wish that myself were accursed from Christ for my brethren, my kinsmen according to the flesh:

What did Moses ask God to do when he cried out for Israel?

Moses cried out asking God to spare the people of Israel. He pleaded that if it would help, God could blot his own name out of the book of life, but that Israel be spared. This mirrors Paul's later willingness to be accursed from Christ for his Jewish brethren.