What did God do when Israel rejected all the covenant promises?
At the point Israel rejected everything belonging to the covenant promises, God said He would take a different tack and went to the Gentiles. This was a fork in the road, setting aside the Gospel of the Kingdom associated with the Twelve, as Paul lays out in these verses.
Les explains that God came to the point when Israel rejected everything of the covenant promises, and God said, in effect, “Now I’ll take a different tack.” So He went to the Gentiles. Les describes this as a fork in the road. He notes that the Twelve could not use the term “Body of Christ,” and Paul never uses the term “Gospel of the Kingdom,” because that term was associated with the twelve. Paul lays out this transition in the verses being discussed, and Les calls it a beautiful presentation of how God moved from Israel to the Gentiles.