Questions about responding to someone who says the Bible teaches reincarnation when it says John the Baptist “is Elijah who was to come” in Matthew 11:14 and whether Matthew 24:36–44 is referring to the rapture.

How should I respond to someone who says the Bible teaches reincarnation in the verse about John the Baptist being Elijah (Matt. 11:14)?

Is Matthew 24:36–44 referring to the rapture, and if not, what’s the best way to convince someone it isn’t about the rapture?