Their mouth is full of cursing and bitterness.

Now we know that whatever the Law says, it speaks to those who are under the Law; so that every mouth may be shut, and all the world may be brought under the judgment of God.

But what does it say? The word is near thee, even in thy mouth and in thy heart. That is the very word of faith which we preach;

Confess with your mouth "Jesus is Lord," and believe in your heart that God actually raised him from the dead, and you will be saved.

For with the heart man believes unto righteousness, and with the mouth confession is made unto salvation.