'Ambush' in the Bible

But the son of Paul's sister heard about the ambush, so he came and got into the barracks and told Paul.

Don't believe them, because more than 40 of them are planning to ambush him. They've taken an oath not to eat or drink before they've killed him. They are ready now, just waiting for your consent."

and asking Festus to have Paul brought to Jerusalem as a favor. They were laying an ambush to kill him on the road.