Their mouth is full of cursing and bitterness.

Now we know that whatever the law says speaks to those who are subject to the law, so that every mouth may be shut and the whole world may become subject to God’s judgment.

On the contrary, what does it say? The message is near you, in your mouth and in your heart. This is the message of faith that we proclaim:

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.

One believes with the heart, resulting in righteousness, and one confesses with the mouth, resulting in salvation.