It's a bit of a puzzle in it's self. In verse 4 the first thing he does is warn them that it would be easy to deceive them because of what they were asking. Then is something else puzzling to me in verse 5 about those doing the deceiving Matthew 24 Interlinear Bible ...
What do you see him as saying in verse 5 is he saying that they would say "they were the Christ" or would they come and say that "Jesus was the Christ and deceive many"?
What do you see him as saying in verse 5 is he saying that they would say "they were the Christ" or would they come and say that "Jesus was the Christ and deceive many"?