If thou wilt forgive their sin. The ellipsis which follows, is to be supplied by some such words, as "well and good"—"I am content"—"I have no more to say." Similar eases of ellipses will be found in Danial Exodus 3:5; Luke 13:9; Luke 19:42; John 6:62; Romans 9:22.
And if not, blot me, I pray thee, out of thy book. Some interpret this as merely equivalent to, "Blot me out of the book of the living," and explain that phrase as meaning simply—"Take my life—kill me instead of them"—but something more seems to be meant.
"The book of the living"—"the book of life"—the book of God's writing—is not merely a register of those who happen to be alive at any given time. It "contains the list of the righteous, and ensures to those whose names are written therein, life before God, first in the earthly kingdom of God, and then eternal life also" (Keil).
Thus Moses declared his willingness—nay, his wish—that God would visit on him the guilt of his people, both in this world and the next, so that he would thereupon forgive them. St. Paul has a similar burst of feeling (Romans 9:1-3); but it does not involve a formal offer—it is simply the expression of a willingness.
Ordinary men are scarcely competent to judge these sayings of great saints. As Bengel says—"It is not easy to estimate the measure of love in a Moses and a Paul; for the narrow boundary of our reasoning powers does not comprehend it, as the little child is unable to comprehend the courage of heroes."
Both were willing—felt willing, at any rate—to sacrifice their own future for their countrymen—and Moses made the offer. Of all the noble acts in Moses' life it is perhaps the noblest; and no correct estimate of his character can be formed which does not base itself to a large extent on his conduct at this crisis.