By the way, I have been informed that Ligonier has pre-sold 200+ copies of the book thus far, not to mention the ones that have been pre-ordered from places like Amazon and CBD. The publisher seems pleased, and sees this as being indicative of people's interest in the issues the book addresses.
Switching topics, I read this in Hahn's Kinship By Covenant a few hours ago:
Paul's argument [in Gal. 3:15-17] is also a reductio ad absurdum: he shows that his opponent's position leads to an unacceptable conclusion. The Judaizers argue that obedience to the Mosaic law is necessary for the Abrahamic blessings to reach the Gentiles, that is, for them to become children of God and children of Abraham. In Paul's view, this would be tantamount to placing the Mosaic law as a condition for the fulfillment of God's covenant with Abraham to bless the nations through his "seed" (Gen. 22:16-18). Since, at the Aqedah [the binding of Isaac], God put himself under an unconditional, unilaterally binding oath to fulfill his covenant with Abraham, this would be nonsense. To suppose that God added conditions (the Mosaic law) to the Abrahamic covenant, long after it had been unilaterally sworn by God would imply that God acted illegally, reneging on a commitment in a way not tolerated even in human covenants. This would be an unacceptable conclusion; therefore, the premise that obedience to the Mosaic law had become the condition for Gentile inclusion into the Abrahamic covenant blessings must be rejected.
Lastly, a plea to Lamar Odom: Just sign on the dotted line, son. But either way, we're looking pretty good.