'Ambush' in the Bible

But when the son of Paul's sister heard about the ambush, he came and entered the barracks and told Paul.

So do not let them persuade you to do this, because more than forty of them are lying in ambush for him. They have bound themselves with an oath not to eat or drink anything until they have killed him, and now they are ready, waiting for you to agree to their request."

Requesting him to do them a favor against Paul, they urged Festus to summon him to Jerusalem, planning an ambush to kill him along the way.