What does 1 Corinthians 15:45 mean?
Scripture not only explains differences, but also the connections between the natural-born body of Christians and the resurrection bodies of those same believers in eternity. Paul wrote in the previous verse that if there is a natural body—the one we live in now—then there is also a "spiritual body." In this specific context, he means the one we will be raised into after God transforms us. In other words, there must be a progression from the natural body, built to live on earth, to the spiritual body, which will be built to exist in heaven and eternity.This was first explained as parallel to how a planted seed dies, only to grow into the ultimate form for which it is intended (1 Corinthians 15:37).
These two bodies are also different-but-connected in that one follows the pattern of the first Adam, while the other follows the pattern of the last Adam, who is Christ. As explained in Genesis 2:7, the first Adam became a living earthly being after God formed him from the dust of the ground. The last Adam, Christ, became a "life-giving spirit" after being resurrected from death to life by God. Jesus was raised as a life-giving spirit in the sense that through Him, and Him alone, those who are born again can look forward to being resurrected as He was.