Fisherman:
The sign of the parousia ironically includes the sign of the son of man seen by the enemies when it is too late.
No. "The sign of the parousia" is "the sign of the son of man", it doesn't merely 'include' it. You are conflating the response to the initial question 'when will these things be' with the response about the 'presence'. Jesus' response indicating the 'parousia' (Strong's G3952), which includes the 'gathering of the chosen ones', is only mentioned in connection with the sign that would appear after the 'tribulation' had ended. No part of the events leading up to the 'triublation' are described as Jesus' 'parousia'. In Jesus' response (in Matthew chapter 24), the word 'parousia' appears only in verses 27, 37 and 39; it doesn't appear at all in the other 'gospels'.