God does not contradict his covenant
John Piper: Paul’s response in Galatians 3:15–18 is this: There are among men (v. 15) and between God and man unalterable pacts. God made one with Abraham and his offspring. The pact was that the inheritance of salvation would come, not to all Abraham’s descendants, but to the seed, which is ultimately the Christ, and … More God does not contradict his covenant