'New Covenant' in the Bible

For finding fault with them, He said to them, "Behold, days are coming, says the Lord, and I will make an end on the house of Israel and on the house of Judah; a new covenant shall be,

In that He says, A new covenant, He has made the first one old. Now that which decays and becomes old is ready to vanish away.

And for this cause He is the Mediator of the new covenant, so that by means of death, for the redemption of the transgressions that were under the first covenant, those who are called might receive the promise of eternal inheritance.

and to Jesus the Mediator of the new covenant, and to blood of sprinkling that speaks better things than that of Abel.