The New John Gill Exposition of the Entire BibleLuke 20:5
And they reasoned with themselves…
Or "they thought
with themselves", as the Syriac version; or "within themselves", as
the Vulgate Latin, though they did not express it; or "one with
another", as the Arabic version; they took counsel together, and
debated the matter among themselves, and reasoned after this manner:
saying, if we shall say from heaven;
which was what, in their own
consciences, they believed to be true,
he will say, why then believed ye him not?
in what he said
concerning the Messiah; which if they had, as they should, there
would have been no reason for such a question they had put;
(See Gill on 21:25).