The Lord created us to be separate from Himself, so that He could love us. He thus allows us to act contrary to His will -- to want what is evil and to believe what is false. When we accept the Lord, though -- by learning what's true and determining to live according to it -- we can let Him place inside us a love for what is good. That is our "inheritance.

'To sanctify' denotes being led by the Lord. It also signifies being incapable of being violated.

(सन्दर्भ: Arcana Coelestia 8806)