Since the raptured Church will still have Jesus as our Savior in Heaven, if we happen to sin in heaven, will He still render to us the protections there as He did here on earth, interceding on our behalf before God the Father? After all, He promised to lose not even one of us from His hand.
When Adam and Eve sinned they lost their immortality because as Paul wrote, the wages of sin is death (Romans 6:23). Because of this, all their descendants were born as mortals with a sin nature, and were subject to death.
At the rapture our bodies will be changed from mortal to immortal (1 Cor. 15:52-53). This means we will no longer have a sin nature, and no longer have any desire to sin. Since there will be no death in the New Jerusalem where we will live (Rev. 21:4), we can safely conclude that we will not sin in heaven.