JMNT(i)
45 Therefore, many from out of the Jews – those coming to Mary and being ones attentively watching what He did – put faith and trust into (or: believed and were loyal unto) Him.
46 Yet some of them went off to the Pharisees and told them what [other MSS: how much; how many] things Jesus did.
47 Consequently, the chief (or: ranking) priests and the Pharisees gathered [the] Sanhedrin (= convoked a council of the leaders of the Jewish religious and political culture), and they began to say, "What are we presently doing, seeing that this man is repeatedly doing many signs?
48 "If we let him go on in this way (or: If we disregard him in this manner; or: Suppose we thus abandon, neglect or leave him alone), they will all progressively put trust (will continue believing) into him, the Romans will proceed to come, and they will progressively take away both our place and our nation (= political station, culture and corporate ethnic identity)."
49 Yet one of them, Caiaphas, being chief priest of that year, said to them, "You people have not seen, nor perceived, nor know anything,
50 "neither are you logically reasoning or taking into account the fact that he is progressively bringing it together for you (or: it is advantageously bringing things together for you), so that one man can die over (or: to the end that one person should and would die away for the sake of [in the sense of "instead of"]) the People, and not [that] the whole nation should destroy itself!"