Q. 29 How are we made partakers of the redemption purchased by Christ?A. We are made partakers of the redemption purchased by Christ by the effectual application of it to us by His Holy Spirit.Titus 

-8 shows you very clearly that your salvation was God's initiative and work, not yours.

WSC Q30: Joined to Christ by the Gift of Faith

The idea of imparting a body of truth (rudiments of the faith) is found repeatedly in scripture under many different terms and descriptions. We are not given a complete catechism or confession in the Bible. That is because we are to write our own according to the needs of the day. They must refute new heresies as they arise. Our Lord has called us to catechise in His church… to teach disciples the basics of the faith. Make the most of this instruction: memorise your Catechism, listen to the messages, and pray for the Spirit to work.