See the notes at Matthew 24:26.
Where, Lord? - Where, or in what direction, shall these calamities come? The answer implies that it would be where there is the most “guilt and wickedness.” Eagles flock where there is prey. So, said he, these armies will flock to the place where there is the most wickedness; and by this their thoughts were directed at once to Jerusalem, the place of eminent wickedness, and the place, therefore, where these calamities might be expected to begin.