Galatians 3:18-20

Revised Standard Version Catholic Edition

¹⁸ For if the inheritance is by the law, it is no longer by promise; but God gave it to Abraham by a promise.

The Purpose of the Law

¹⁹ Why then the law? It was added because of transgressions, till the offspring should come to whom the promise had been made; and it was ordained by angels through an intermediary. ²⁰ Now an intermediary implies more than one; but God is one.