Bible Verses About New testament meaning

Who also hath made us able ministers of the new testament; not of the letter, but of the spirit: for the letter killeth, but the spirit giveth life.KJV

Likewise also the cup after supper, saying, This cup is the new testament in my blood, which is shed for you.KJV

And for this cause he is the mediator of the new testament, that by means of death, for the redemption of the transgressions that were under the first testament, they which are called might receive the promise of eternal inheritance.KJV

For this is my blood of the new testament, which is shed for many for the remission of sins.KJV