Q. 36 What are the benefits which in this life do accompany or flow from justification, adoption, and sanctification?A. The benefits which in this life do accompany or flow from justification, adoption, and sanctification are: assurance of God's love, peace of conscience, joy in the Holy Ghost, increase of grace, and perseverance therein to the end.So what is it that fills the believer with joy? What is the source of our joy? First of all, understand what true Christian joy is not. It is not just a feeling of euphoria without any roots. Nor is it joy from a wrong root. That kind of joy is no good. Peter says that Christians have joy because we have an amazing inheritance in heaven.

WSC Q36d: Increase of Grace

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.