But now is Christ risen - On the contrary, Christ is raised from the dead, and is become the first fruits of them that slept. His resurrection has been demonstrated, and our resurrection necessarily follows; as sure as the first fruits are the proof that there is a harvest, so surely the resurrection of Christ is a proof of ours. The Judaizing teacher at Corinth would feel the force of this observation much sooner than we can, who are not much acquainted with Jewish customs. "Although," says Dr. Lightfoot, "the resurrection of Christ, compared with some first fruits, has very good harmony with them; yet especially it agrees with the offering of the sheaf, commonly called עומר omer, not only as the thing itself, but also as to the circumstances of the time. For first there was the passover, and the day following was a Sabbatic day, and on the day following that the first fruits were offered. So Christ, our passover, was crucified: the day following his crucifixion was the Sabbath, and the day following that, He, the first fruits of them that slept, rose again. All who died before Christ, and were raised again to life, died afterwards; but Christ is the first fruits of all who shall be raised from the dead to die no more."

now. See on.

1 Corinthians 15:4-8 And that he was buried, and that he rose again the third day according to the scriptures...

the first-fruits.

1 Corinthians 15:23 But every man in his own order: Christ the first fruits; afterward they that are Christ's at his coming.

Acts 26:23 That Christ should suffer, and that he should be the first that should rise from the dead, and should show light to the people...

Romans 8:11 But if the Spirit of him that raised up Jesus from the dead dwell in you...

Colossians 1:18 And he is the head of the body, the church: who is the beginning, the firstborn from the dead...

1 Peter 1:3 Blessed be the God and Father of our Lord Jesus Christ...

Revelation 1:5 And from Jesus Christ, who is the faithful witness, and the first begotten of the dead, and the prince of the kings of the earth...

Fifth Sunday after Easter
Text: First Corinthians 15, 51-58. 51 Behold, I tell you a mystery: We all shall not sleep, but we shall all be changed, 52 in a moment, in the twinkling of an eye, at the last trump: for the trumpet shall sound, and the dead shall be raised incorruptible, and we shall be changed. 53 For this corruptible must put on incorruption, and this mortal must put on immortality. 54 But when this corruptible shall have put on incorruption, and this mortal shall have put on immortality, then shall come to pass …
Martin Luther—Epistle Sermons, Vol. II

Paul's Estimate of Himself
'By the grace of God I am what I am: and His grace which was bestowed upon me was not in vain.'--1 COR. xv. 10. The Apostle was, all his life, under the hateful necessity of vindicating his character and Apostleship. Thus here, though his main purpose in the context is simply to declare the Gospel which he preached, he is obliged to turn aside in order to assert, and to back up his assertion, that there was no sort of difference between him and the other recognised teachers of Christian truth. He …
Alexander Maclaren—Romans, Corinthians (To II Corinthians, Chap. V)

The Unity of Apostolic Teaching
Whether it were I or they, so we preach, and so ye believed.'--1 COR. xv. 11. Party spirit and faction were the curses of Greek civic life, and they had crept into at least one of the Greek churches--that in the luxurious and powerful city of Corinth. We know that there was a very considerable body of antagonists to Paul, who ranked themselves under the banner of Apollos or of Cephas i.e. Peter. Therefore, Paul, keenly conscious that he was speaking to some unfriendly critics, hastens in the …
Alexander Maclaren—Romans, Corinthians (To II Corinthians, Chap. V)