Judas did not deliver Jesus over to them yet, rather he went to make arrangements with them. AT: "in order to arrange with them to bring Jesus to them" (See: [[rc://en/ta/man/translate/figs-explicit]])
# deliver
"Deliver" is a metaphor, meaning "to bring". (See: rc://en/ta/man/translate/figs-metaphor).
It may be helpful to state clearly what the chief priests heard. AT: "When the chief priests heard what he was willing to do for them" (See: [[rc://en/ta/man/translate/figs-explicit]])