Therefore, since the children share in blood and flesh, he also in like manner shared in these same things, in order that through death he could destroy the one who has the power of death, that is, the devil, and could set free these who through fear of death were subject to slavery throughout all their lives.” (Hebrews 2:14–15, LEB)

The writer to Hebrews points out two things [among many] that Jesus did through death:He destroyed the devil, and he set free those “who through fear of death were subject to slavery.”

  1. Destroying the Devil. The word used is “diabolos,” which means “slanderer” or “accuser,” both of which we find the Devil doing in the Scriptures.  Satan is opposed to God and all that he stands for and works to subvert [even though he ultimately cannot and will not] all that God is doing, but here is what is important about this verse:  the Devil has already been defeated.  Jesus accomplish this at the cross.
  2. Destroying Death. At the cross Jesus conquered death, the great foe of every living being for we are all subject to it…until Jesus.  Because of the cross we need no longer fear death, indeed Paul writes that “do die is gain!”

All of which reminds me of this song: