Romans (Rom) 10:9-11

that if you acknowledge publicly with your mouth that Yeshua is Lord and trust in your heart that God raised him from the dead, you will be delivered. For with the heart one goes on trusting and thus continues toward righteousness, while with the mouth one keeps on making public acknowledgement and thus continues toward deliverance. For the passage quoted says that everyone who rests his trust on him will not be humiliated.