Romans 10

4 Christ is the culmination of the law so that there may be righteousness for everyone who believes.
This verse has a double meaning. Christ epitomises God's purpose and goal of the law and also is the termination/completion of it, in that the law by itself is powerless to save us. Many Jews set customs and traditions which they believed made them righteous in God's sight. However, the only way to earn salvation is to be perfect and our sinful inheritance from Adam makes that impossible. It is through mercy alone that we have received it, and we in gratitude proclaim him in our actions and words because of it.

14 How, then, can they call on the one they have not believed in? And how can they believe in the one of whom they have not heard? And how can they hear without someone preaching to them?15 And how can anyone preach unless they are sent? As it is written: “How beautiful are the feet of those who bring good news!”
In spreading the Gospel, it must not only be lived out but also Proclaimed. If people want to know why we act the way we do, we will eventually have to explain the reason. They can only respond to the good news if we verbally spread our beliefs. This is one the main reasons why i'm glad to do these reflections, it forces me to actively think and reflect upon what I am reading. This will hopefully in turn help me become more knowledgable and preach correct theology.