Passage
the first man out of [the] earth, made of dust; the second man, out of heaven.
the first man out of [the] earth, made of dust; the second man, out of heaven.
1 Corinthians 15:45 Thus also it is written, The first man Adam became a living soul; the last Adam a quickening spirit.
1 Corinthians 15:46 But that which is spiritual [was] not first, but that which is natural, then that which is spiritual:
1 Corinthians 15:47 the first man out of [the] earth, made of dust; the second man, out of heaven.
1 Corinthians 15:48 Such as he made of dust, such also those made of dust; and such as the heavenly [one], such also the heavenly [ones].
1 Corinthians 15:49 And as we have borne the image of the [one] made of dust, we shall bear also the image of the heavenly [one].
The verse centers on "first", "earth", "dust", "second", and "heaven". It is saying that the verse draws attention to "first" and "earth", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 46's "But that which is spiritual was not..." into verse 48's "Such as he made of dust such...", so "first" and "earth" belong inside that flow. In 1 Corinthians context, the local focus is Christ, faith, and discipleship.
A plain takeaway is to answer the verse's own emphasis on "first" and "earth" with trust shaped by these words, not by a vague optimism outside the passage.