The phrase "earthly man" refers to a human being who belongs to the physical world and lives their life on Earth, as opposed to a spiritual or divine being. Full definition
Should the Swan represent the heavenly man, and the crane represent the old earthly man.... (redeeminggod.com)
In John 3:11 - 13 we get the second main point of the discourse: that an answer to the question about Jesus will not be given by scanning the heavens, but by attending to the human words and deeds of the one standing before you, the Son of man - that is, this concrete earthly man. (religion-online.org)
«The second man is of heaven... just as we have borne the image of the earthly man, so shall we bear the image of the heavenly man» (1 Corinthians 15:47 — 49). (rachelheldevans.com)