Romans 4:14-16

14For if they which are of the law be heirs, faith is made void, and the promise made of none effect:

15Because the law worketh wrath: for where no law is, there is no transgression.

16Therefore it is of faith, that it might be by grace; to the end the promise might be sure to all the seed; not to that only which is of the law, but to that also which is of the faith of Abraham; who is the father of us all,