John Gill Commentary Luke 11:54

"laying wait for him, to catch something out of his mouth." — Luke 11:54 (ASV)

Laying wait for him
To ensnare and entangle him, watching his words, observing what he said, and laying hold thereon:

and seeking to catch something out of his mouth ;
like beasts of prey, or hunters, that were watching for their prey; or lay ambush, diligently looking out, and greedily catching at every thing they thought for their purpose:

that they might accuse him ;
either of heresy or sedition, to the Jewish sanhedrim, or the Roman governor.