What are the outward means whereby Christ communicates to us the benefits of his mediation?

The outward and ordinary means whereby Christ communicates to his church the benefits of his mediation, are all his ordinances; especially the word, sacraments, and prayer; all which are made effectual to the elect for their salvation.[1]

1. Matt. 28:19-20

   Go therefore and make disciples of all nations, baptizing them in the name of the Father and of the Son and of the Holy Spirit, 20teaching them to observe all that I have commanded you. And behold, I am with you always, to the end of the age.

   Acts 2:42, 46-47

   And they devoted themselves to the apostles’ teaching and the fellowship, to the breaking of bread and the prayers.

   And day by day, attending the temple together and breaking bread in their homes, they received their food with glad and generous hearts, praising God and having favor with all the people. And the Lord added to their number day by day those who were being saved.

Question 154, Westminster Larger Catechism