'Agreement' in the Bible

But when I saw that they were not living uprightly in agreement with the true words of the good news, I said to Cephas before them all, If you, being a Jew, are living like the Gentiles, and not like the Jews, how will you make the Gentiles do the same as the Jews?

Brothers, let me use an example from everyday life. Once an agreement has been ratified, no one can cancel it or add conditions to it.

Now this I say: The law, which came four hundred and thirty years after, does not put an end to the agreement made before by God, so as to make the undertaking without effect.