'Ratifies' in the Bible

for this is My blood of the [new and better] covenant, which [ratifies the agreement and] is being poured out for many [as a substitutionary atonement] for the forgiveness of sins.

And He said to them, “This is My blood of the [new] covenant, [My blood] which is being poured out for many [for the forgiveness of sins].

saying, “This is the blood of the covenant [that seals and ratifies the agreement] which God ordained and commanded [me to deliver to] you.”