5 Bible Verses about Sealing A Covenant

Then as they were eating, Jesus took bread, and blessing, brake, and gave it to the disciples, and said, Take, eat: this is my body. And taking the cup, and giving thanks, he gave it to them, saying, Drink ye all of this: for this is my blood, that [blood] of the new testament, which is shed for many, for the remission of sins.read more.
And I tell you, That I will no more henceforth drink of this produce of the vine, until that day when I drink it with you, new, in the kingdom of my Father.

And as they were eating, Jesus taking a loaf, when he had blessed, brake it, and gave to them, and said, Take, eat; this is my body. And taking the cup, when he had given thanks, he gave it to them; and they all drank out of it. And he said unto them, This is my blood of the new testament, which is shed for many.read more.
Verily I say unto you, That I will henceforth no more drink of the produce of the vine, until that day when I shall drink it new in the kingdom of God.

And taking the cup, after having given thanks, he said, Take this, and divide among yourselves: for I say unto you, that I shall no more drink of the fruit of the vine, until the kingdom of God come. And taking a loaf, he gave thanks, and brake, and gave it to them, saying, This is my body which is given for you: do this in remembrance of me.read more.
And the cup in like manner, after supper, saying, This cup is the new testament in my blood, which is shed for you.

For I received of the Lord what also I delivered to you, That the Lord Jesus, in the night in which he was betrayed, took a loaf: and when he had blessed it, he brake it, and said, Take, eat; this is my body, which is broken for you: do this in remembrance of me. In like manner also he took the cup, after they had supped, saying, This cup is the new testament in my blood: this do, as often as ye drink it, in remembrance of me.

and to Jesus the mediator of the new testament, and to the blood of sprinkling, which speaketh better things than that of Abel.