4 Bible Verses about Speaking With The Mouth

whose mouth is full of cursing and bitterness.

and after the question had been much canvass'd, Peter rose up, and said, my brethren, you know that a considerable time since God chose me from among you to preach the gospel to the Gentiles, and bring them to the faith.

what does it say "more? the word is nigh thee, let it be in thy mouth and in thy heart:" that is the word of faith which we preach.

for with the heart man believeth unto righteousness, and with the mouth confession is made unto salvation.