Albert Barnes Commentary Luke 17:23-24

"And they shall say to you, Lo, there! Lo, here! go not away, nor follow after [them]: for as the lightning, when it lighteneth out of the one part under the heaven, shineth unto the other part under heaven; so shall the Son of man be in his day." — Luke 17:23-24 (ASV)

And they shall say, etc. Many false Christs, according to Josephus, appeared about that time, attempting to lead away the people. See Barnes "Matthew 24:23"; also Matthew 24:24-27.