The Bible has dozens of examples where the Lord physically and literally came down to earth on certain days to administer judgment, oversee calamity and fulfill promise and prophecy. These days of the Lord where he physically and literally comes down to the planet is where the Bible's doctrine of the coming of the Lord comes hails from. What does not exist in the Bible is the phrase "the second coming." Unlike the phrase "the Trinity" that is also not in the Bible but that at least goes along with what the Bibles teaches. The idea of a "second" coming or advent changes the Bibles teaching on the matter and renders the Bible's prophecy incomprehensible. Which by the way is design of the phrase. To turn peoples eyes away from the supernatural clarity of the Bible's prophecy and turn those eyes to something the Bible does not prophesy at all. Apocalyptic end of the world scenarios. https://wordservice.org/Shorts/sms1004.html