Bible Verses About faith and words

A wholesome tongue is a tree of life: but perverseness therein is a breach in the spirit.

Death and life are in the power of the tongue: and they that love it shall eat the fruit thereof.

But I say unto you, That every idle word that men shall speak, they shall give account thereof in the day of judgment.

And Jesus said unto them, Because of your unbelief: for verily I say unto you, If ye have faith as a grain of mustard seed, ye shall say unto this mountain, Remove hence to yonder place; and it shall remove; and nothing shall be impossible unto you.

And Jesus answering saith unto them, Have faith in God.

So then faith cometh by hearing, and hearing by the word of God.

We having the same spirit of faith, according as it is written, I believed, and therefore have I spoken; we also believe, and therefore speak;

Let no corrupt communication proceed out of your mouth, but that which is good to the use of edifying, that it may minister grace unto the hearers.

Now faith is the substance of things hoped for, the evidence of things not seen.

But be ye doers of the word, and not hearers only, deceiving your own selves.

What doth it profit, my brethren, though a man say he hath faith, and have not works? can faith save him?