How do we come to be made partakers of the benefits which Christ hath procured?

We are made partakers of the benefits which Christ hath procured,[1] by the application of them unto us, which is the work especially of God the Holy Ghost.[2]

1. John 1:11-12

   He came to his own, and his own people did not receive him. But to all who did receive him, who believed in his name, he gave the right to become children of God … .
   

2. Titus 3:5-6

   … he saved us, not because of works done by us in righteousness, but according to his own mercy, by the washing of regeneration and renewal of the Holy Spirit, whom he poured out on us richly through Jesus Christ our Savior … .
   

Westminster Larger Catechism, Question 58