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.— Romans 10:9-10
There is the heart of a person and there is the mouth of a person. When it comes to salvation, the two should be in harmony with one another. If you believe in your heart that Jesus is who the Bible says He is, then your mouth should also confess that Jesus is who the Bible says he is. If you do these two things, then our verse for today says you are saved.
Although Paul doesn’t explicitly say it in this context, the Bible teaches that the person whose heart truly believes and whose mouth truly confesses will also start down the road towards a Christ-like life. It was James who explicitly made this point. He said, “What good is it, dear brothers and sisters, if you say you have faith but don’t show it by your actions? Can that kind of faith save anyone?” (James 2:14). Indeed, Jesus himself said, “If any of you wants to be my follower, you must turn from your selfish ways, take up your cross, and follow me'” (Matthew 16:24).
The heart full of faith in Jesus will confess that faith and will begin, however imperfectly, to walk in that faith.