Galatians 3:15, 17, 18, 19
Galatians 3:17 NIV
What I mean is this: The law, introduced 430 years later, does not set aside the covenant previously established by God and thus do away with the promise.
Galatians 3:18 NIV
For if the inheritance depends on the law, then it no longer depends on the promise; but God in his grace gave it to Abraham through a promise.