Cremation or burial - is cremation a sin

No verse forbids cremation, and no believer's resurrection depends on the state of their remains - settle that fear first. The God who will raise the dead formed Adam from dust and has no difficulty with bodies lost to fire, sea, or centuries: 'the sea gave up the dead which were in it' (Revelation 20:13), and 'we shall all be changed, in a moment, in the twinkling of an eye' (1 Corinthians 15:51-52). Every body returns to dust by one road or another - 'dust thou art, and unto dust shalt thou return' (Genesis 3:19) - and martyrs burned at the stake will rise as gloriously as patriarchs in tombs.

It is true that burial was the consistent biblical practice, chosen as an act of honor and hope - Abraham buried Sarah (Genesis 23), Joseph gave his tomb to Jesus (Matthew 27:59-60) - and burial preaches a sermon: the body sown like seed awaiting harvest (1 Corinthians 15:42-44). For that reason many Christians prefer it, and that preference is honorable. But it is a preference, not a law: this is a Romans 14 matter of conscience and often of cost, and cremation chosen by a grieving family is not a sin and does not dishonor the dead or alarm heaven.

Whatever is done, the believer's hope is not in the grave's condition but in the empty one outside Jerusalem (1 Corinthians 15:20).