Galatians 3:2

3:2 The only thing I want to learn from you is this: Did you receive the Spirit by doing the works of the law or by believing what you heard?

Galatians 3:5

3:5 Does God then give you the Spirit and work miracles among you by your doing the works of the law or by your believing what you heard?

Galatians 3:18

3:18 For if the inheritance is based on the law, it is no longer based on the promise, but God graciously gave it to Abraham through the promise.

Galatians 4:22-23

4:22 For it is written that Abraham had two sons, one by the slave woman and the other by the free woman. 4:23 But one, the son by the slave woman, was born by natural descent, while the other, the son by the free woman, was born through the promise.