Commentaries:
Because of what Christ did, now we can hope for the glory of God—a glory Paul describes here as celestial.
John W. Ritenbaugh
The Covenants, Grace, and Law (Part Thirteen)
There is no question in Paul's mind that there are celestial bodies. What is a celestial body? Many Bibles translate "celestial" as "heavenly." Paul is speaking about spirit bodies. He says plainly that spirits have bodies.
John W. Ritenbaugh
Image and Likeness of God (Part One)
Other Forerunner Commentary entries containing 1 Corinthians 15:40:
Genesis 1:26-27
Luke 1:26-30
Luke 1:41-42
1 Corinthians 1:7-8