Paul begins this chapter expressing his desire that his fellow Jews would be saved. He commends their zealousness, but points out that they're missing God's righteousness. He's been trying to show that faith is the key to receiving right standing with God. And he shows how simple it is when we "confess with our mouth Jesus as Lord a d believe in our hearts that God has raised Him from the dead."
This is foundational for the life lived by faith. We're encouraged to build our faith by "absorbing" the Holy Scriptures. To end the chapter, Paul quotes several OT passages that shed some light on problem.
