1 Corinthians 15:51

“Behold, I show you a mystery, etc.] Or a secret, which could never have been discovered by reason, or the light of nature, and what is of pure revelation; and which perhaps the apostle became acquainted with, when he was caught up into the third heaven; and is what is never made mention of by any prophet, or apostle, but himself: he prefaces the account of it in this manner, partly to show the great respect he had for these Corinthians, that he treated them as his bosom friends, to whom he communicated his secrets; and partly to excite their curiosity and attention: we shall not all sleep, but we shall all be changed; some copies read, “we shall all rise again, but we shall not all be…”

“Behold--Calling attention to the "mystery" heretofore hidden in God's purposes, but now revealed. you--emphatical in the Greek; I show (Greek, "tell," namely, by the word of the Lord, Th1 4:15) YOU, who think you have so much knowledge, "a mystery" (compare Rom 11:25) which your reason could never have discovered. Many of the old manuscripts and Fathers read, "We shall all sleep, but we shall not all be changed"; but this is plainly a corrupt reading, inconsistent with Th1 4:15, Th1 4:17, and with the apostle's argument here, which is that a change is necessary (Co1 15:53). English Version is supported by some of the oldest manuscripts and Fathers. The Greek is literally "We all shall not…”

“Behold I show you - This commences the third subject of inquiry in the chapter, the question, what will become of those who are alive when the Lord Jesus shall return to raise the dead? This was an obvious inquiry, and the answer was, perhaps, supposed to be difficult. Paul answers it directly, and says that they will undergo an instantaneous change, which will make them like the dead that shall be raised. A mystery - On the meaning of this word, see the note on 1 Corinthians 2:7. The word here does not mean anything which was in its nature unintelligible, but that which to them had been hitherto unknown. “I now communicate to you a truth which has not been brought into the discussion, and…”

“A mystery - A truth hitherto unknown; and not yet fully known to any of the sons of men. We - Christians. The Apostle considers them all as one, in their succeeding generations. Shall not all die - Suffer a separation of soul and body. But we shall all - Who do not die, be changed - So that this animal body shall become spiritual. 1 Corinthians 15:52”

“15:51 The Good News reveals the previously unknown secret of resurrection. • We will not all die: Paul might have expected the future resurrection in his own lifetime (cp. 15:52; 1 Thes 4:15, 17).”

“I show: Co1 2:7, Co1 4:1, Co1 13:2; Eph 1:9, Eph 3:3, Eph 5:32 We shall not: Co1 15:6, Co1 15:18, Co1 15:20; Th1 4:14-17 changed: Phi 3:21 1 Corinthians 15:52”