Jamieson, Fausset and Brown on 1 Corinthians 15:53

53. this--pointing to his own body and that of those whom he addresses.

put on--as a garment (2Co 5:2, 3).

immortality--Here only, besides 1Ti 6:16, the word "immortality" is found. Nowhere is the immortality of the soul, distinct from the body, taught; a notion which many erroneously have derived from heathen philosophers. Scripture does not contemplate the anomalous state brought about by death, as the consummation to be earnestly looked for (2Co 5:4), but the resurrection.