Albert Barnes on John 11:50

It is expedient for us. It is better for us. Literally, "It is profitable for us."

That one man should die. Jesus they regarded as promoting sedition, and as exposing the nation, if he was successful, to the vengeance of the Romans, Jn 11:48. If he was put to death they supposed the people would be safe. This is all, doubtless, that he meant by his dying for the people. He did not himself intend to speak of his dying as an atonement or a sacrifice; but his words might also express that, and, though he was unconscious of it, he was expressing a real truth. In the sense in which he intended it there was no truth in the observation, nor occasion for it, but in the sense which the words might convey there was real and most important truth. It was expedient, it was infinitely desirable, that Jesus should die for that people, and for all others, to save them from perishing.

(k) "it is expedient" Lk 24:46