And again — This is a new argument. The former was drawn from the time, this from the nature, of the transaction. If the eternal inheritance be obtained by keeping the law, it is no more by virtue of the free promise — These being just opposite to each other. But it is by promise. Therefore it is not by the law.
Related Commentaries of Galatians 3:18
Galatians 3:18
18 For if the inheritance be of the law, it is no more of promise: but God gave it to Abraham by promise.