S – If you confess with your mouth, “Jesus is Lord,” and believe in your heart that God raised him from the dead, you will be saved. 10 One believes with the heart, resulting in righteousness, and one confesses with the mouth, resulting in salvation
Romans 10:9–10 CSB
O – Commentary:
Confessing with the mouth that Jesus is Lord is mentioned first to conform to the order of the quotation from Deuteronomy 30:14 in Romans 10:8. The confession is an acknowledgement that God has been incarnated in Jesus, that Jesus Christ is God. Also essential is heart-faith that God raised Him from the dead. The result is salvation. The true order is given in verse 10: For it is with your heart that you believe and are justified (lit., “it is believed unto righteousness”), and it is with your mouth that you confess and are saved (lit., “it is confessed unto salvation”). Yet these are not two separate steps to salvation. They are chronologically together. Salvation comes through acknowledging to God that Christ is God and believing in Him.
“Romans,” in The Bible Knowledge Commentary: An Exposition of the Scriptures
A – There is a relationship between what we say and believe. If they contradict, we are lying to ourselves and living hypocritically. A genuine believer has the conviction of the heart and words that align with that conviction.
R – Lord, let my thoughts, words and actions line up with You.