Paul continues to write about Israel and their relationship with God in this chapter. He argues their position is no different than the one of the Gentiles because salvation is by faith for everyone, whether Gentile or Jew.
He also writes this saving faith is not a private matter, but one that is openly declared. It is not an open declaration of the church we attend, or even that we believe in God (even the demons do that). It is not a statement of the positions we have held in the church, or the number of mission trips on which we have gone. It is not a generic religious belief, but rather very specific. It is the declaration of your trust in Jesus Christ as Lord and your belief that Jesus has been raised from the dead.
This is my declaration. Is it yours?
Romans 10:9-13 NLT
If you openly declare that Jesus is Lord and believe in your heart that God raised him from the dead, you will be saved.  For it is by believing in your heart that you are made right with God, and it is by openly declaring your faith that you are saved.  As the Scriptures tell us, “Anyone who trusts in him will never be disgraced.”  Jew and Gentile are the same in this respect. They have the same Lord, who gives generously to all who call on him.  For “Everyone who calls on the name of the LORD will be saved.”