For if those who live by law are heirs [of Abraham], faith has no value and the promise is worthless, because law brings wrath. And where there is no law there is no transgression.
Therefore, the promise comes by faith, so that it may be by grace and may be guaranteed to all Abraham’s offspring- not only to those who are of the law but also to those who are of the faith of Abraham…
– Romans 4:14-16