John 11:51

Now this he did not say on his own authority; but being high priest that year he prophesied that Jesus would die for the nation,

Surrounding context

11:50 nor do you consider that it is expedient for us that one man should die for the people, and not that the whole nation should perish."

11:51 Now this he did not say on his own authority; but being high priest that year he prophesied that Jesus would die for the nation,

11:52 and not for that nation only, but also that He would gather together in one the children of God who were scattered abroad.

Translation and sources