JMNT(i)
55 Meanwhile the chief priests and the whole Sanhedrin (the ruling council) – looking for evidence against Jesus in order to issue a death sentence [on] Him – kept on trying to find a witness [to bring testimony or evidence] corresponding to and down on (= against) Jesus, but they were not finding [any].
56 You see, many kept on giving false testimonies (or: evidence) down on (or: against) Him, and yet the stories (testimonies) were not being consistent (alike; equal; = in agreement).