Mark 11:29

And Jesus answered and said unto them,.... Being not in the least intimidated by such a body of men:

I will also ask of you one question; or "one word", or "one thing";

λογος, here answers to the Hebrew word דבר, which signifies both "word" and "thing":

and answer me, and I will tell you by what authority I do these things; Matthew 21:24.